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External USB hard drive not recognised on Windows after plugging it into a Mac

Question: External USB hard drive not recognised on Windows after plugging it into a Mac


Thanks for any help in advance..

I own a WD MyBook 4TB hard drive, which I've used on Windows for the past 2 years. I got a macbook last week and hooked the drive into it, some error message came up so I figured it wouldn't work, however when I went to plug it back into my windows machine I got the "USB device not recognised" message, the laptop is windows 8. I then tried it on my fathers windows xp computer and it seemed to think it was a completely new hard drive..

I've done some googling on it but I just wanted to ask here incase I went formatting it by mistake or anything..any advice/help would be greatly appreciated.


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Preferred Solution: External USB hard drive not recognised on Windows after plugging it into a Mac

I recommend downloading and running Reimage. It's a computer repair tool that has been proven to identify and fix many Windows problems with a high level of success.

I've used it in the past to identify and fix everything from blue screens (BSOD's), ActiveX errors, corrupt files and processes, dll/exe/sys errors, recover lost memory, Windows update problems, defragging, malware removal etc.

You can download it direct from this link (This link will automatically start a download of Reimage that you can save to your computer.)

Answer: External USB hard drive not recognised on Windows after plugging it into a Mac

Sounds like you made some procedural error, allowing the Mac to alter the partition - - bad choice.

Using Windows tools, examine the partition on that drive - - should show up as
somelabel (dl): size HTFS
Healthy (other qualifiers)​
Try Control Panel ->Admin Tools->Computer Mgmt->Disk Mgmt

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I noticed that my PC suddenly took a long time to boot up and close down. After some testing I found that if my external HD was plugged in that was the cause. I thought it might be an indexing delay so didn't worry as all I needed to do was plug the HD in when needed it and make sure I "Safely" unplugged it before shutting down. But now I can't get access to it at all. I hear the usual bleep when I plug it in and it appears in the task bar "Can I safely remove etc" but it doesn't appear in Disk Management or Explorer. I fear the HD has died although I can detect the normal very slight murmer of the drive when it is switched on. I did find the disk using a command prompt but can't remember how I got there! Is there any way I can save the data on it? I have tried all the usual tests like a different USB port (not a hub) and a different Windows 7 machine but to no avail.

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Hi there,

I've recently just bought a USB2.0 HDD External Enclosure for a notebook hard drive. I think I installed the drive correctly - the pins fit well and I placed it in the actual case. However, when I plug the USB into my Windows 7 Acer Aspire 5741 laptop, it just makes a funny noise for around thirty seconds and the computer does not bat an eyelid. The laptop just seems to act as a power source and doesn't recognise any drive being inserted. I tried it on a second, Windows Vista laptop and same result.

Is it likely the enclosure/drive is the problem or have I not set it up correctly?

Any help would be appreciated.


Answer:External Hard-drive not recognised on Windows 7 or Vista

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I have an external Samsung 640Gb hard drive which is not showing up in Windows Explorer, even though Device Manager shows it as recognized and working properly.
I am running Windows7 Home and this is something new as when I bought the drive it showed up in Explorer.
Could anyon e help - I really need this drive as all my backups and programs are on it!

Answer:external hard drive not recognised in windows explorer

Click the Start button. Right-click on 'computer'. Select 'Manage'. Click 'Storage/Disk Management'. Right-click on the drive and select @Change Drive Letter and Paths..'. Select 'Add', accept the suggested drive letter and click OK. The drive should now be recognised.

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I'm new here, so please don't shout at me if I say something stupid.

Anyway, here's my problem:

I have a Maxtor 500GB stand alone hard drive which I originally bought for a Vista laptop, but have also been using it on my new Win7 laptop.

It has been absolutely fine for the 6 months that I've been on Win7, but today Windows Update decided that I needed 27 (count 'em!) updates to be installed an run - mostly for MS Office.

Anyway, the updates all installed and I restarted upon request, but since then my Maxtor hard drive has not been recognised.

A USB Unknown Device error appears, it doesn't list the drive in My Computer, and only appears in Device Manager as Unknown Device.

Any ideas of how to resolve this would be greatly appreciated, as I have a large number of important documents on that drive which I need to access relatively urgently.

many thanks


Answer:External Hard Drive Not Recognised Following Windows Update

Is it connected via USB or eSata?

In the meantime, try right clicking on My Computer, Manage, Device Manager, then right click on the top-most entry and select "Scan for Hardware Changes".

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I have a 250 GB external hard drive lying around my house that's about 4-5 years old and I'm looking to start using it again. The last time I used it, I recall copying some files to it from an old computer, which may have had some viruses on it. I'd like to reformat the drive completely, erasing any virus that would potentially be on it. However, I am hesitant to connect the drive to my current computer because I don't want to risk getting infected from it.So I guess my questions boil down these:1. How can I go about clearing this drive to clear it 100% of any viruses/malware that might be on it?2. How can I clear this drive without potentially infecting my computer in the process? Or should I just reformat it using someone elses Mac (I use Windows 7) and then plug it back into my computer and reformat it again?3. If possible is there a safe way to see what files are on this drive without potentially infecting my computer? (I'm 99.9% sure anything on this drive is either completely useless to me or already present on my current laptop so blindly reformatting it is no big deal)I already have SandBoxie installed on my computer if using a Sandbox would help. I also currently own, and use, Norton 360 and have MalwareBytes installed on my computer.Thanks for the help.

Answer:Plugging in an Old External Hard Drive

A number of Linux live CDs come with disk partitioning tools which can remove, create, resize and format partitions. GParted is the name of one such tool, and there is a live CD specifically made for this task. says on that page it is for x86 computers, so you may need to have access to one. Also there are such tools on many Linux bootable CDs including Koppix, Ark Linux Live, Kubuntu, MEPIS, NimbleX, and others.

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Hey there
So, a few weeks ago I could plug my WD external hard drive in and it worked perfectly. Something has happended (something I have done?) and now when I connect it with the USB I get bsod
This is the result from the blue screen log
Can someone help me? Is there any more information required?

Dump File : 120411-46457-01.dmp
Crash Time : 4/12/2011 2:20:31 p.m.
Bug Check Code : 0x0000003b
Parameter 1 : 00000000`c0000005
Parameter 2 : fffff800`032b41c7
Parameter 3 : fffff880`09d5be70
Parameter 4 : 00000000`00000000
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+7fd00
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.17592 (win7sp1_gdr.110408-1631)
Processor : x64
Crash Address : ntoskrnl.exe+7fd00
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\120411-46457-01.dmp
Processors Count : 8
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144

Dump File : 120411-38891-01.dmp
Crash Time : 4/12/2011 11:08:33 a.m.
Bug Check Code : 0x0000003b
Parameter 1 : 00000000`c0000005
Parameter 2 : fffff800`0325d157
Parameter 3 : fffff880`098dfe70
Parameter 4 :... Read more

Answer:BSOD - when plugging in USB external hard drive

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I've tried plugging in my external hard drive (a WD Passport 1 Tera) USB to access picture files... my laptop (Windows Vista) went to a blue screen and shut itself down. Here is some info it gave me after it restarted...

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.0.6002.
Locale ID: 1033

Additional information about the problem:
BCCode: 24
BCP1: 001904AA
BCP2: 8BB4F3E4
BCP3: 8BB4F0E0
BCP4: 8B024689
OS Version: 6_0_6002
Service Pack: 2_0
Product: 768_1

I'm wondering if I did something wrong when I disconnected the external hard drive from our new Seagate wireless backup system. I had no idea how to "safely" or "properly" remove it... so I just disconnected the USB cable.

Any ideas?

Answer:Solved: BSOD when plugging in external hard drive

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Hi, I am going to clean up my cousin's computer. It is slow as molasses and I am guessing that it is infected bigtime. I wanna plug my external hard drive into the computer so I can backup all the files they want off the computer. I am just wondering if my external hard drive is vulnerable to viruses when I do this? I am going to try to do a Factory Restore. If that doesn't work for some reason I will do a complete reformat. Also it takes forever and I mean forever to get to things on that computer. Is there a faster way to get files onto my external hard drive before I do a Factory Restore? Also if I do a Factory Restore instead of a reformat will all the viruses be gone? Thanks.

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Hi, I am going to clean up my cousin's computer. It is slow as molasses and I am guessing that it is infected bigtime. I wanna plug my external hard drive into the computer so I can backup all the files they want off the computer. I am just wondering if my external hard drive is vulnerable to viruses when I do this? I am going to do a Factory Restore. Also it takes forever and I mean forever to get to things on that computer. Is there a faster way to get files onto my external hard drive before I do a Factory Restore? Also if I do a Factory Restore instead of a reformat will all the viruses be gone? Thanks.

Answer:Plugging External Hard drive into an infected computer!!!!

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hello.i'm new in this forum, so i didn't know whether this topic has been posted before or not.yesterday, i accidentally plugging the wrong power supply (19V 2.1A) to my toshiba 1gb external hard drive (12V 2A).when i plugged in the right power supply, the LED on the hard drive keep on blinking, but it is not detected in my, i would like to know whether any of you has any suggestions, or any ideas whether my drive is dead or it is just damaging my usb enclosure.thanks alots in advance.

Answer:Plugging wrong power supply to external hard drive

a similar scenario here :o(click here

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I have two external hard drives that I have been using for backups etc. on my desktop running Windows 10 Home. I connected the external drives to my HP Laptop running Windows 7 Home Premium SP1 to copy some files andit has changed the ownership to the external drives laptop user!
Now when I connect the external drives back on my desktop running Windows 10 Home the drives are not recognised anddon?t even show in Disk Management!
How can I get the external drives to be recognised and change ownership back on my desktop running Windows 10 Home?

Answer:External hard drive not recognised

I was going to suggest trying Acronis Disk Director or anything similar, however, I'm not certain if such will help or not. If I can remember the possible "clicks," I'll post back.

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I use two external drives as archive and back up, a Seagate 260GB and a Freecom 300GBMy Freecom suddenly has become unavailable because Windows "cannot find a driver for Cypress AT2LP RC42" Looking on the net shows a lot of such problems around Dec 2006 but I can find any solution listed other than A)Buying a new drive or B) Buying a new External Drive case and fitting the old drive into it. The first would result in the loss of all data on the drive (- It should be backed up on the Seagatebut who knows if there has been a seperate malfunction?)The secondbeg the question of would the new case acually work.Does anyone know of a way to get the missing driver?

Answer:External Hard drive not recognised

This may be of help to you, just ignore the one who says through it in the here

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Hi there,

I've just bought a Verbatim External Hard Drive - 640GB. When I connect it to my PC [Compaq Presario 5000] using the supplied USB lead, I get the message "USB Device not recognised".

I have tried all the USB ports on the PC and have re-booted several times without any luck.

I attached it to my laptop and it worked within seconds so there's no problem with the hardware.

Any help and advice gratefully received.

Answer:External Hard Drive Not Recognised via USB

Have you tried any other USB devices on the aging Compaq 5000? You can try installing newer chipset drivers, that might help, or go to Windows Updates, go to the optional hardware updates and see if a newer USB driver is available...

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Hi guys
ive just bought a secondhand philips SPD5110cc external hard drive from ebay.
My pc doesnt recognise it as a drive.
when i first connected it , i got the "setting up hardware" note in the bottom right corner as usual,
but then nothing. Cant see anything to do with it in any menu.
Power light is on, i can feel the drive running, but nothing.

im running windows 7.
I know its an old model drive. I dont have the nero software cd which came with it originally.
ive been on the philips website to try for the drivers but they only go up to windows 98 for 2006 !!

the guy i bought it from formatted it on a mac book before sending it to me and says it was working fine on his.

surely this will just work without any special tweaks. its only a hard drive!!!
does it need a driver just to let me see it.?

Ive also got a maxtor external drive which works fine.

any help would be much appreciated.

Answer:external hard drive not recognised

the guy i bought it from formatted it on a mac book before sending it to me and says it was working fine on his.Click to expand...

quite apart from any other issue of the drive - that is the reason windows cannot see the drive it does not recognise the format
A mac formatted drive cannot be seen by windows

Is it seen in disk management - it will not be likely to be seen in Windows explorer.
Alternatively is it seen in diskpart
cmd prompt and type diskpart
when it loads diskpart type
list disk

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Hi guys,Thanks again for your help on my previous thread regarding my Vaio Tower not working after the storms last week also my modem is broken so the problem must have been thro the phone line.Well the beast is back working after pc world fixed it BUT!! on re plugging my Seagate external hard drive it tells me in the tool bar that it doesnt recognise the USB device.The drive is full of life Green light fan working etc..what has happened??.I have checked thro the troubleshooting properties on route hub as told.All my music is on here nightmare you trust in a external drive in case of the nightmare storm or program loss so is the data still on there? what do you recommend (other USB'S ARE OK BY THE WAY)Please can you help.Cheers

Answer:External hard drive not recognised HELP!!

See if you can get a flash drive or other device such as a printer to work on the same USB port you're using for the Seagate.Try the Seagate on a different USB port - are there any USB expansion cards fitted to the pc? if so try using that instead .

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Thank you in advance to any help I receive. Here is my story...

My Versa NEC E2000 notebook has had several problems under warranty since purchased under lease 2.5yrs ago - it's had 3 hard drives and 1 motherboard replaced under warranty. NEC advised a global replacement program for the battery.
So I had my hubby undo the base of the computer to check out whether my battery part number fell into the range requiring replacement, which he did so that I could submit it to NEC for replacemt Since then (don?t why seeing the 2 areas aren?t connected?) my DVD/cd drive has been faulty. It intermittently will not read cds/dvds and won?t write new discs PLUS it makes this awful ?whirring? and ?scraping noises? when you press the eject button & close unit (whether disc in it or not) or upon start-up.

Basically I couldn?t rely on it & because it was similar to problems that occurred when I ended up with the other warranty repairs I began to freak I would lose my data & programs. I had a small portable external hard drive which I kept as much pictures (semi pro photographer so I have 1000s of digital files) and business data on as possible - I had tried backing up to it but it wouldn?t take the everything on my notebook plus the stuff already on small drive. Seeing I couldn?t write stuff to cd/dvds we decided to go and buy bigger external hard drive. (I have virus/adware/spy scanning in place & used to backup to discs and/or my small ex... Read more

Answer:External hard drive not recognised

Me again - I decided to try once more plugging my maxtor drive in... and guess what it turned up on my device manager this time stating 465.76 Gb space 100% free. This has shocked me being that I have attempted this approx 10 times prior to posting during the day and NOW it shows up. The drive has been making noises ever since (10mins +) but it doesnt show up on my computer still. Please please help me. I am going crazy here wondering what the heck is going on. If i have to return the maxtor under warranty and my NEC under its extended warranty then fine - but i really want my data back first.
Wishing for a computer angel.

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I realise there are loads of these kind of threads but none of them are quite the same problem as mine. My Hard Drive has been working fine for a long time but is now not being recognised by computers. The power light goes on, but when plugged into different computers different usbs and with a different usb cable, there is no change to the computer and the hard drive doesnt start movfing and making noise.
I realise its probably broken but is there anysoftware I can get that will find it just so i can recover some data?
Thanks for your help

Answer:External Hard Drive Not recognised

Try and take it out of the enclosure and hook it direct as a second HD....if it is getting power and it isn't spinning......then if the taking out of enclosure doesn't work..then data recovery company might help but the data would have to be very important as very very expensive.

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I have purchased an external hard drive case and installed a second hand 40 GB hard drive. Win XP Home reconizes it as a mass storage drive but it dosn't appear in Explorer.The hard drive has been formatted (I'm told) but I don't know what file system was used. Where do I Start?

Answer:External Hard Drive Not Recognised

In disk manager,check it is really formated.

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Hi all...I bought a BUFFALO hard drive and transfered all our pics before replacing desk top for a new laptop (DELL INSPIRON)
Problem is laptop doesn't recognise this device when pluuged in no prompts not showing anywhere...Really worried as all our wedding photos are on it...Any advice appreciated...Be gentle I'm not very PC literate :)

Answer:External hard drive not recognised-Help!

is buffalo powered up?
check if drive seen in device manager or disk manager

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Hello everyone,
Once again i need your help. I have an external hard drive, and a lot of data saved on it. My laptop recognises it, but i can't access it. When i go to device manager and try intialize, it says it is not ready.

Thanks for ur help

Answer:External Hard drive not recognised

Is this a small portable drive or one of the larger ones?
Does it have external power for the external enclosure?
I would also verify the wire you are using.

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I've got a new external hard drive that should be plug and play. When I plug it in the computer "beeped" and said there was new hardware but then it is not shown in My computer.

I'm also having a similar problem with my ipod - it is not showing in my computer or itunes. However I'm not having the same problem with other external hard drives.

Any ideas?

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I have two external hard drives that I have been using for backups etc. on my desktop running Windows 10 Home. I connected the external drives to my HP Laptop running Windows 7 Home Premium SP1 to copy some files and it has changed the ownership to the external drives laptop user!
Now when I connect the external drives back on my desktop running Windows 10 Home the drives are not recognised!!
How can I get the external drives to be recognised and change ownership back on my desktop running Windows 10 Home??

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Please can anyone help me? I have an external hard drive but when i plug it into my computer through the usb port it is connecting but it does not come up in my computer and i cannot access it. When looking at the properties for the hard drive it says it is at location: 0. does anyone have any idea how to initialize the hard drive and get it working on my computer??thanks

Answer:Have external hard drive but not being recognised

Has it been formatted? That is required to be seen in Windows. Right click and choose format FAT32 or NTFS, whichever file system you are using on your main drive.

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my wd hard drive is no longer being recognised by my laptop, absolutly nothing happens when i plug it in. it does however work on my mothers laptop. please can you help.

Answer:external hard drive not recognised

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My Gericom external hard drive is now not being recgnised in my computer. it used to be. wonder what's happened.

Answer:External hard drive not NOW being recognised

Try taking the cover of it and then Reseat the Drive Ribbon Plugs

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I have a toshiba external hard drive which my computer is not recognising. It has all my photos on so I really do want to get it working.I have tried removing and replacing the plugs to no avail. The hard drive does not make any sounds when switched on, but power is getting to it as the light comes on. Any help would be greatly appreciated

Answer:External hard drive not recognised

Does it show in device manager?or any sign when you plug in the USB port.What operating system are you using?Have you tried it on another machine?Can you check the internal connections on the drive?

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I've been using a 1TB iOmega external hard drive with my laptop for about a month and a few days ago it stopped working and isn't being recognised, the power light comes on when i connect the usb cable to the laptop but there is no noise from the hard drive at all and it doesn't show in disk management.

I took it into work with me and connected to my work PC (which runs XP) and it works fine, also tried it on another laptop which is running Vista and it doesn't work.

any ideas? Laptop is an HP Pavilion DV6

Answer:External Hard Drive Not Being Recognised

The first thing that comes to my mind is, does this external hdd have its own powersupply or does it receive its power from the USB ports only?

If it has its own powersupply, check with iOmega: and see if your hdd requires drivers for Windows 7. In years past, iOmega required drivers for all of its stuff whereas other products you could just plug into the usb and they would work.

If it receives its power from the USB ports, try to use a cable that has two ends for the USB ports, it could be just a lack of power. I have 1 TB (not iomega) that would not work from my front USB ports but will work from the rear USB ports of my desktop.

Let me know how this turns out for ya...

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I lent my external hard drive to a friend who is not very computer savvy.... and since its return it is not being recognised by my computer.

i dont believe that it is not because it dosent have a letter allocated to it.

in disk management it shows WD Ext HDD 1021 USB Device properties.... it said that this device is working properly, but then it also says that Disk 1 is unallocated?

i have plugged external hd into two other computers, they do not recognise it and i have also plugged in another hd into my computer, which picks it up automatically.

my friend who borrowed the hd is not very computer savvy, but from what he told me, i think he has formatted it?

i have checked the device manager and there dosent seem to be anything out of the ordinary.

ANY HELP will be muchly appreciated!

if it helps, it is a WD brand.... oh, and yes it was working fine when i first got it a week ago.

Answer:External Hard drive not recognised

Hello Tahnead, and welcome to Vista Forums.

Your friend deleted your hard drive leaving it as unallicated space (unformatted).

If you did not need the data that was on it, then you can just use Disk Management to format and create a new "simple volume" with it. The STEP TWO section in the tutorial below can help show you how to if needed.

Disk Management - Shrink Partition

If you needed to try and recover the data on the drive, then you see if using Paragon Partition Manager Personal edition may be able to undelete the drive's partition for you. Unfortunately, the edition of this program that allows you to undelete a partition is not free and costs $9.95.

Hope this helps,

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Sorry if this is in the wrong place but I need advice on my IdeaPad 510, it does not recognise my HP external hard drive. I've tried plugging the external drive into all the USB slots, with no luck. The laptop is brand new, only bought three days ago, and my USB storage stick works in it, so I can't work out why it won't find my HP drive. The drive isn't faulty, worked perfectly on my old Toshiba, and lights up when plugged into my Lenovo, but when I go to the 'This PC' section it's nowhere to be seen. I've even looked on HPs website I case I need to download a driver but the HP website says that there isnt any drivers for my external hard drive. Can anybody help me figure this out please? I have a lot of work on that drive, as well as family photos, that I need to access. Thanks in advance

Answer:External Hard Drive Not Recognised

fletcher89 wrote:The drive isn't faulty, worked perfectly on my old Toshiba, and lights up when plugged into my Lenovo, but when I go to the 'This PC' section it's nowhere to be seen.Have you plugged in and switched on the separate power supply for the external hard drive?  The external drive may require more power than can be supplied by your Lenovo via the USB connection.  If this is the case, the LED will light on the hard drive, but there will be insufficient power to spin the disk or handle read/write requests correctly. The old Toshiba may have provided more power via USB than the new Lenovo can. -- from CyberSimian in the UK

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hi there.Neither of my pc's will now recognise my external hard drive, says to format the drive. But I can't do this or I will lose all my stuff. My LG smart tv will recognise the drive however. Is there anyway to access my photos, videos etc and put them back on my laptop? Thank you/

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I'm having a problem with a WD MyBook External Hard Drive.

I was at a friends house and they accidently knocked my hard drive over, the drive was standing upright on the floor (as we were about to use it) plugged in to the power but not in the computer, and she accidently knocked it and it fell on its side. I then went to use it, and it wasnt working, was not being recognised by my friends computer. When I got back to my computer I tried it and the same thing is happening, there is a noise coming from it, and the light is on, saying it is connected to a computer, but it has not come up in Computer as anything and it does not come up when connected to my ps3.

It would be annoying enough that the hard drive may be broken, but only 2 days ago I did a clean install of my computer, and this is my only back up, and there are so many personal and important documents that have yet to be transferred over.

Answer:External Hard Drive Not Being Recognised

I have some bad news for you. if the drive was on when it was knocked over, the heads were in near-contact with the drive platters. That means that the heads probably hit the platter while it was spinning (this is called a head crash). Your drive is probably hosed.


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I have two external hard drives that I have been using for backups etc. on my desktop running Windows 10 Home. I connected the external drives to my HP Laptop running Windows 7 Home Premium SP1 to copy some files andit has changed the ownership to the external drives laptop user!
Now when I connect the external drives back on my desktop running Windows 10 Home the drives are not recognised anddon?t even show in Disk Management!
How can I get the external drives to be recognised and change ownership back on my desktop running Windows 10 Home?

Answer:External hard drive not recognised

I was going to suggest trying Acronis Disk Director or anything similar, however, I'm not certain if such will help or not. If I can remember the possible "clicks," I'll post back.

2 more replies
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Hi first post here. My portable hard drive stops showing up all of a sudden. It is connected to a USB hub. When I go to 'Disk Management' in 'Computer Management', the hard drive shows up as Unknown - Not Initialised. Also this hard drive works while not using the USB hub, and the USB hub works as well with other devices. Please help, I need this fixed soon. Thanks!

Answer:External hard drive not recognised

Powered or unpowered hub? If it unpowered its drawing all its power from the one USB port its plugged into. USB 2 ports are limited to 500 ma max. If you have more than one device on the hub its likely not supplying enough current for the hard drive to function properly. A powered hub can supply 500 ma per port.

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Can anyone shed some light. I have a 40 Gb external USB hard drive attached to my PC. Which was being used exclusively as storage and my PC recognised it no problem. Today I actually installed it into my PC (internal), reformatted it and loaded Windows XP home onto it. As I wanted to save my existing hard disk just in case and install a clean O/S to swap over eventually. I have since taken this disk back out and connected it via USB again and it is not being recognised at all by Win XP. Is it therefore true that if there is an O/S loaded on an external USB hard drive that it cannot be recognised let alone booted to. Any advice is much appreciated....

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Hi All,
My 1.5tb Samsung Story Station has stopped being recognised by my computer. When I go to disk management, the disc shows but says the whole disk is empty when in fact it has lots of files on. The light flashes but it sounds like it's not getting enough power or something.
The strange thing is when I plug it into my tv (it has a usb port for playing video files), I can access all the files and watch the films etc on there with no problems. The light is solid when it is plugged into this which is what is expected.
Please can anyone help?

Answer:External Hard Drive Not Recognised

Refresh USB Ports
Use Drive clean up to remove USB device drive info from the registry
then plug in drive and see if windows finds and recognises all the files

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I recently changed the power supply on my Seagate External HD after the previous one blew. I re-connected the HD to my PC and i get the following message ' One of the USB Devices attached to this computer has malfunctioned and windows does not recognize it'
It now only shows as an Unknown device and does not show up at all. At first i thought the HD was faulty but i tried it on my works pc and it recognised it immediately and i had full access to the HD so i'm rather puzzled as to what has happened. Any help on this would be much appreciated

Answer:My Seagate External Hard Drive is not recognised

Was it connected to the PC when the Power Supply blew?
Does the USB connection, that it was using then, work with other devices?

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Hi, i have an external hard drive and it was running great. I then turned off my computer, took it out the usb so i could move the case. Put it back in the slot. turned on comp and got the following message..

"USB device not recognised.
One of the usb devices attached to this computer has malfunctioned, and windows does not recognize it."

I'm certain i didnt damage the hard drive and I've tried different usb sockets. all of them in fact. and they work with other things.

I am using windows vista ultimate.

Please help

Answer:USB device not recognised. External Hard Drive

Bump.... Please help i need those files back

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Hi all
I have a 500GB external Seagate HD. When connected to my pc yesterday however it was not recognised anywhere, not showing in dvices and drives, in disk management or even in the bios. It was fine the last time I connected it and it actually starts up although makes a clicking sound for about twenty seconds.
I took it out of the housing and connected it directly but still no sign. Have tried different USB ports and I have used various online tools including Seagates own tool but nothing sees it.
Any ideas at all as I have never had a drive not recognised anywhere before?

Answer:Seagate external hard drive not recognised anywhere on the PC?

Do you have another PC you can connect it to? The clicking noise sounds rather worrying, and I'd suspect the drive has developed a fault.

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Okay, basically, all the information..I have external casings for my old hard drives from my old laptop. I let my mum borrow one of the old drives, and unfortunately, it would seem as though she has broken it, when it was working perfectly before.

I have it so it's partitioned, one which is FAT formatted, and one which is NTFS formatted. It's total size is 250gb.

When I plug it into my previous laptop it makes a different noise (kind of like an alarm) as opposed to the usual fan type noise it makes. And this is what I get as far as it being recognised;

But it does not show up where it would do usually as a drive (e.g. (F: ))

Any help would be greatly appreciated... I really need the files on this drive asap!

Answer:External Hard Drive seems to be recognised, but no access :( PLEASE HELP

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I have a western digital external hard drive that I use for day to day work.

I recently put it into a laptop PC to copy the contents of a hard drive, it appears that something 'went wrong' in the process and I now cannot access the hard drive.

When I plug it in, I get the standard 'power surge on USB hub' and the light on the front of the hard drive (suggesting that it is still working).

My thought was to re-format the drive, although I am unsure of how to go about this when I cannot access it, or does anyone have any ideas how I could revert the error?

Any advice/solutions would be greatly appreciated!!

Answer:Solved: WD external hard-drive not recognised.

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I am running XPHome with SP1 and have installed an External Drive. It is showing on Device Manager as a Mass Storage Device,not as a Hard Drive. My Computer is not showing anythingunder Hard Drives apart from HD(C)and under Devices with removable storage nothing is shown at all.Joe

Answer:External USB2 Hard Drive not recognised

Mass storage device in Device Manager is as it should be.Should be shown in My Computer or Explorer window as Removable Disk - letter will be after any other drives.

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My operating system is Win 2K. Mr problem is that I have Buslink external hard drive that in not being recognised by my desktop computer. It is USB connected. The software has been loaded and the computer at first recognises the HDD when it is first plugged in but fails to do so after a reboot. I have tried the drive on other computers all with success. They used Win 98 or XP.Any suggestions I would be grateful.Regards, Ken Tumber

Answer:Buslink External Hard Drive Not Recognised

An option would be to leave it unplugged when rebooting - then connect it when you are booted. Not ideal I know, but an option.

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Please help. I have just bought a Gericom 250gb external 3.5' hard disk drive unit with 6 in 1 card reader, but my PC is failing to detect the drive. I can't install the drivers as I have Windows XP which is supposed to recognise the drive automatically. Bizarrley the card reader is recognised. Also, when first installed the hard disk drive was recognised, but no longer is. Please help

Answer:External Hard Disc Drive Not Recognised

Control Panel\Administrator\Disc Management

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Upon insertion of the external drive it does not show up in 'My Computer.' It is recognised in device manager and devices & printers, and even in disk management, however any attempt to access the drive is fruitless. I am completely unable to format or change drive letter & paths, however disk management suggests that the partition is completely healthy yet I am unable to access the drive. Uninstalling & reinstalling drivers has no effect & current drivers are up to date.
Any help would be appreciated!

Answer:Seagate External Hard Drive Not Recognised

Sorry, I messed up the image upload the first time around lol.

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I'm on XP Pro and successfully installed and used a new, USB2-connected Freecom External HD a few months ago. Following a few PC problems, it isn't now recognised. If connected up, the blue light flashes for hours at a time. Sometimes - but not always - the PC won't shut down or boot up if the External is connected.I've tried the various combinations of uninstalling/reinstalling the software, shutting off the HD power &/or replacing the plug into the USB port - with the PC off and on, etc. I can't discover anything from Device Manager or Disk Management.Any help will be gratefully received. Many Thanks.

Answer:External Hard Drive No Longer Recognised

I really do wish you luck. But if you search this forum (and my thread pertaining to a similar problem is not too far away) and other similar forums, the external hard drive not being recognised is a common problem. Another common thread is that the problem is not usually solved. Good luck anyway.

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Hi everyone,

this seems to be a common theme, but the threads I have read don`t seem to match my problem exactly or don`t end up resolved ??

My portable hdd was working fine in both laptops (one NEC/vista, one NEC netbook/windows 7) I loaded a movie into the portable hdd to transfer from one laptop to the other as the other one is connected through the tv. It seemed to accept the file fine, but when I tried to load it into the other pc it didn`t recognise the hard drive. It doesn`t recognise it in the original pc either and there is no sign of it when I use disc manager.

The hard drive lights up ok, feels like the disc is spinning (small vibration feeling) the usb connections seem fine. Its a serial ata type and usb 2.0 but no identifying mark for a manufacturer.

I used it for backing up my desk top files, I`m not too worried about the files on the portable drive as the desk top originals are still ok. ( at least I hope so as the computer is being shipped from the uk to Japan as I type) Things are complicated as the laptops have Japanese versions of windows but I have friends who can help me read the Japanese. Anyone have any good ideas as I have no idea where to start because I can`t see anything.

Many thanks in advance, Rumi

Answer:Solved: yet another external hard drive not recognised

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I have been using this 3.5" prezmate external hard drive for over a year. There is a lot of data and images stored on it.The other day I plugged it in but my laptop, Acer 5680 with Vista premium could not recofnise it.The mains light on the convertor is alight as is the signal light on the hard drive.It came with a disk for windows 98 but Vista uses plug and play.I can hear a whirring noise inside it but only when I switch on the internal fan.Can anyone help me please to recover my files from this storage, especially my video files.Pjbm

Answer:prezmate external hard drive not recognised

This may work:Right-click Computer > Manage > Storage > Disk Management then right-click on the drive that is 'hidden' > Change Drive Letter/Paths... > select a letter from nearer the end of the alphabet > OK and the disk should show in Computer. Try another letter if it stays hidden. Also, give the partition a Volume Label to make it easier to identify.

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I borrowed my friends external hard drive. I was working fine on my PC. Now however when I plug it in I can not access it.
When I plug it into the USB the icon on bottom right of screen with green arrow, shows I have the device plugged in, but My Computer does not show the hard drive.
I plugged the hard drive into my work laptop and same thing happens.
My PC recognises other USB devices such as ipod and USB stick.
The hard drive is Western Digital.
I am on Windows XP.
I am unsure what has happened. I did one day accidentally knock it out of the USB port one day but I believe this problem existed before this.
Can you please help me as this drive has back up data on it from my friends work so I don't want to lose it.

Thank you!

Answer:Solved: USB External hard drive - now not recognised anywhere

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I took the hard drive from an old DVD recorder, fitted it into an SATA enclosure and plugged in to my computer.'New USB device' recognised by computer, followed by 'new device ready for use'Looked at 'My Computer' expecting it to show up as a new drive, 'F' in my case, but nothing showed.Device Manager showed device attached to USB socket, and no conflicts showing. Disk manager reports a healthy disk, but I can't find a way to access it.It also shows a low capacity disk in FAT format in Drive 0I'd like to reformat in NFTS mode and use the disk as an external hard drive, but can't think how to do it.I'd appreciate any help.Using XP home edition.

Answer:External Hard Drive not recognised by computer

Didyou change the setting from 'Master' to 'Slave'?

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I had been using my Hitachi 320g external HD for 2yrs.It had not problem until yesterday I transfering some files from my Drive C to Hitachi HD when the computer hang.I unpluged the external HD and restart PC.When I pluged in the external HD again it was recognised as interrnal HD.I've problem accessing the files.The PC detected it was FAT32 since my system was NTFS and asked me to reformat my external HD.I tried connect to other PC but no different.

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Hi, I was wondering if anyone has got a dual or mutli drive external hard drive device working on a L520 or any other Lenovo laptop that uses either an eSATA or USB 3 connection. I can not seem to get mine working, it's a L520 (model 7859CTO) and has an eSATA port and an ExpressCard slot, and I also have both an eSATA & a USB 3 expresscard adapters. The external drives will all show up if I connected with USB 2, but using the existing eSATA port and/or the eSATA & USB 3 expresscard adapters it will only show one of the drives and not all. Thanks for any help on this.

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I have attached a Seagate 500 GG external hard drive to my computer but it is not showing up in My Computer. I have browsed similar threads and on their advice gone into Device Manager. The drive is there but with no letter assigned to it but when I right click to assign one, it refers me to Windows Help, which is unable to solve the problem. There are actually two extra ikons in Device Manager - one marked FAT Healthy (EISA Configuration) and the other just marked (GPT Protective Partition). The device is acknowledged as working properly in Device Manager
The files on this drive were created on a Mac, which may be the source of the problem? Most of them I will therefore not be able to read, but there is one which is a .mov file which I should be able to read and hopefully copy - if I can access it.
Is there any way I can access the drive via my PC (Windows XP) or will the drive have been formatted for Mac only and therefore is inaccessible via PC?
I'm afraid that's the best I can manage in terms of technical information. Any advice would be much appreciated please.

Answer:Seagate external hard drive not recognised by my computer

I would venture a guess that the simple answer is that the drive was formatted for a Mac and windows is unable to recognize it as such. Now, being said that, with the newer technologies and emulators that Macs and PCs use, I am not 100% sure.

Now for the dumb question, have you tried plugging it back onto the Mac and see if you can read it and copy the file and then format it to the pc so you can use it? that is, if you will need it more on the PC than on the Mac.

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So I have a Lacie external hard drive. Now when plugged into windows it is not says that the drive is corrupt and unreadable. However I can recover files fine from it...using file scavenger. My question is this:Is there some auto play file that is missing? Or something I can do to it to get it to work again? Otherwise I will have to chuck it which is annoying.thanks (BTW I have tried it in another laptop with the same result...)

Answer:External hard drive not recognised but works fine.

As long as there isn't any data on the drive that you need to keep, you should be able to remove any existing partitions, repartition the drive, allocate a drive letter and then format it. Do this in Disk Management ("Start > Run", type DISKMGMT.MSC and click OK).

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I have bought a brand new 500gb Seagate Barracuda Hard drive and a New Icy box enclosure for it. After putting it together and plugging it in to the computer, It displays a message saying device not recognised by the computer and that it may have malfunctioned (but it is new). I guessed i would need to partition and format it so i went to disk management but it is not listed!??? It is also not in my computer however it is in device management but has a yellow explanation mark. which reads (unknown device) and the description reads Windows has stopped this device because it has reported problems. (Code 43). Please help!!!

Answer:Solved: External Hard drive not recognised by computer!

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i have a seagate external hard drive that my computer no longer recognises even though it used to, i have tried all three of my USB ports and it still wont work even though they work for other things but when i connect the hard drive to my TV it is recognised and can b used so im assuming its setting on my pc? what can i do?

Answer:my external hard drive is not recognised anymore by my computer

Hello lozzi, welcome to Seven Forums!

Is the HDD listed in diskpart?

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iv had my Iomega hdd for about a year at most and its been fine, yesterday the usb cable was accidentally unplugged from the hdd while still connected to my laptop. Now when the hdd is plugged in, it makes beeping noises for a few seconds and the green light indicated power but it doesnt have any motor running sounds and it is not recognised by my laptop. I tried it on my family computer and its the same problem. I have tried restarting and no changes. I have attempted checking the disk management and as far as i can see it is not there either, and when i run F:\ it is unavailable.
any help is very much appreciated, as usual in these cases theres lots of important files i need off it!!

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Just had a my computer refitted (new hardware put in and a few things taken out)My old 60GB HDD that was the main drive in my computer (i've now got just a 40GB HDD in the computer) is now sitting in a caddy acting as an external hard drive so i can take it to college and back.The problem is when its plugged into my computer it only recognises it as a 30GB hard drive. I had this problem before when it was in my computer but solved it with a piece of software (whose name i can't remember) that made the computer recognise its full size. Anyone know what that piece of software might be and where i might be able to find it.My computer: Win 2000, Motherboard - MSI MS-6712 1.0, External HDD - IBM 60GXPAny help is greatly appreciated, cheers

Answer:External hard drive full size not recognised

Hard disk tools :-Seatools click hereWD Data lifeguard click hereMaxblast3 click hereAny one of these should do it but not sure if it will work via an external caddy.

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I'm using an old internal HD as a external hard drive. It's recognised in computer, but when i open it there is nothing showing.
You can see the space bar, which is nearly full showing data in red on there.
Can anyone advise how to open and access folders?

Answer:External Hard Drive Recognised - No Folders Showing

Your OS is?

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I've had a 1TB iomega external hard drive for about 6 months and all of a sudden my computer no longer recognises it when I switch it on. No window pops up as it used to when it was detected and its not present under the device manager. I've tried it on two different pc's and with 2 different usb cables and still no joy. The light on the side still comes on and its making the usual whirring noises.Has it simply broken and that's it??Any help much appreciatedThanks

Answer:Iomega external hard drive no longer recognised

do you have any really important files on it ?

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I'm looking to upgrade my Windows 7 OS from 32-bit to 64-bit. I have checked that my processor supports a 64-bit OS, which it does.

My question is this:

I have an external drive with about 1.6TB of purchased iTunes data currently plugged into my laptop running Windows 7 Ultimate 32-bit. After I finish upgrading to a 64-bit OS, when I plug this drive back in (or any USB drive for that matter), will it prompt a re-format before letting me use it in Windows 7 Ultimate 64-bit?



Answer:Plugging in an external drive to Windows 7 Ultimate 64-bit?

Only the operating system is either 32bit or 64. The file system is NTFS and will be just fine when you have 64bit installed.

Just remember 64 bit uses a bit more resources, but then you get to use the remainder of RAM in your 4 gigs which you cant now.

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I recently purchased a Samsung 2.5" 500GB USB external hard disk on eBay, and received it just this morning. After a bit of testing I decided I wanted to separate it into two partitions (one for data and one for my Wii games). When I tried to do that using Windows XP's disk manager, it went formatted 99% then returned a plain "Format did not complete successfully", with no additional info. Then the hard drive just disappeared. Windows explorer will not detect it (it will make the "USB device connected/disconnected" noises upon plugging it in or unplugging it from the computer however), and neither will the disk manager, which means I can't simply delete the partition and format again. The blue LED indicating connection between the drive and the computer does blink when I plug the drive in, and then it remains static until I unplug it.

Any help is really really appreciated. I'll gladly provide additional information to the best of my knowledge.

Answer:External hard drive (Samsung 500GB) format failed; not recognised

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Have had this external drive for over 3 years and have had no such problems until now.Drive was not seen under Windows XP and device manager had a exclamation mark beside the hardware with the foollowing error "This device cannot start. (Code 10)Click Troubleshoot to start the troubleshooter for this device."Have unisntalled the Mass Storage Device and unplugged the USB Cable. When I insert the USB Cable in, Windows finds the USB Mass Storage Devicee. However it then brings up the error message: " A problem occurred during hardware installation. Your hardware may not function correctly"

Answer:USB External Hard Drive - Drive not recognised

uninstall all the USB devices in Device manager,Action scan for hardware changes and let windows find a reinstall all the usb equipment.

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I whiped my laptop and re installed windows xp and now when I plug in any of my removable hard drives or an empty 4 port usb hub a blue screen flashes for such a short amount of time i cant read one word. The computer will re start and go to the screen that asks if I would like to start windows normally or with my last known configuration that worked. This does not happen however when I plug in my receiver for my wireless mouse in the same port. These devices I am plugging in works fine on any other computer. I have 2 other usb ports which does not work. I am at the beginning of a business trip that will last 3 weeks and all my info is on these removable drives so this could not have happened at a worse time. This is on my Toshiba laptop 5205-s703. I have the 3 disks for my drivers and installed the 1st one fine. The other 2 didnt give me options to install anything. I tried to go to the Toshiba website and download the drivers but I couldnt find them. Any help would be greatly appreciated....

Answer:after re installing windows my cpu shuts off when plugging in removable hard drive

Try this... Start> right click on My Computer> Properties> Advanced> Startup and Recovery. Under startup and Recovery click on Settings, uncheck the box in Automatically restart under System failure. This will stop the automatic restarts. Once this is done you should get an error message rather than restarting. Please post the exact error message.

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I have an Packard Bell Easynote R1935 notebook serial number:702211960233 and have had to change the hard drive. I have fitted the hard drive which is shown in the BIOS but when I install windows and get as far as pressing enter to install windows which is XP home I get the following message. "Setup did not find any hard disc drives in your computer. Make sure any hard disc drives are powered and properly connected etc." The new hard disc is fitted correctly." How can I get windows to recognise the hard drive? Please help.

Answer:Hard drive not recognised by windows

the new drive is correctly formatted, and you have double-checked the connection.If the drive is recognised in the BIOS but not by Windows setup it may be that you haven't set the drive as the first boot device. It may not be initialising in time for the installer to see it.

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Need a bit of help on an issue with an Internal SATA 2.5" Hard Drive.
I have removed this drive from a working laptop which had a dual boot of Linux and Windows on it. I would like to use the hard drive for another application however when I have inserted it into a USB caddy, the hard drive is not recognised at all by windows (bar the icon in the corner saying that the device had been successfully installed). The Hard drive is no where to be seen in Windows Explorer.
I have tried to use some free hard drive partition/recovery program which can see the hard drive, however it has greyed out all options of a reformat, repartition and so on.
Does anyone have any ideas which I can try?
The hard drive, when returned to the laptop, will boot perfectly into Windows and Linux.

Answer:Hard Drive not recognised by Windows

Right click My Computer and select Manage
Click on disk management
Is the drive listed there and if so does it have a drive letter?
Drives without drive letters will not show up in My Computer.

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USB drives freezing server
Server 2003 OS

I'm setting up a backup solution for one of my clients and am having problems. When we plug in an external USB hard drive, things get all wacky. I can open some programs but not others, can't reboot, and lose some functionality of the OS. Eventually I have to hard reboot in order to get it back up and running. Many new external USB hard drives create an extra "virtual CD drive" when you plug them in. I first figured that this was incompatible with Server 2003 but when I tried some older WD USB drives, I realized differently.

Some external USB drives work fine and some don't. Those that do work: I plug in the drive, it's recognized in Windows Explorer and the Disk Management utility. I can safely remove tham as well. Those that don't work: I lose OS functionality, can't see it in Windows Explorer, and can't reboot. (All of the drives are tested and working on other computers.)

I removed all the utilities that install with the newer HDs, and went into the registery and cleaned out all the remnants as well. There are no errors in the Event Log. I have tried different ports. Each drive that works, consistently works. Each drive that doesn't work, consistently doesnt work.

Tomorrow I'm going to run all the Windows Critical Updates and update the BIOS.

Any ideas???

Answer:Computer locks when plugging in external USB drive

Is it possible to test some of the faulty drives inside the server? As in install them using an internal connection?

How old is the server?

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My 500Gb Sumodisk USB hard disk is not recognised by my 2 Windows machines. Devide manager states the Drivers are not installed.

When i connect the hard disk to another laptop running XP it sees the drive and works perfectly.

The disk manager states XP is using the USBSTOR.SYS and USBSTOR.INF (is this correct or is UBSTOR ?) and can these located in Windows 7 and used as the device drivers ?

Answer:Sumodisk USB hard drive not recognised Windows 7

The generic Microsoft drivers for all external hard drives are built in to all versions of Windows XP, Windows Vista & Windows 7, therefore your installation of Windows 7 may be faulty with some drivers having been missed out for some reason.

Try running the System File Checker:

Start >> Run
Type sfc /scannow
Click 'OK'

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I recently fitted a Maxtor 160GB Hard Drive then reinstalled XP Home and SP2, afterwards using Max Blast 4 and the Big Drive Enabler. The size is recognised by BIOS but not by Windows. Windows has a fix, which is on SP1 but not on SP2, see kb 303013. The fix is an updated Atapi driver. I checked my system and found that the older driver was installed. I downloaded the fix but it won't install as SP2 is there. So how do I manage to get this newer driver? The only way I can see at present is to remove SP2, install SP1 then SP2 again. Or does anybody know better please?

Answer:Hard drive size not recognised by Windows

Shows 127G not 160G?(start > run > regedit <enter>) and go to the following folder HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\atapi\Parameters there add a new key named "EnableBigLba" , type: "REG_DWORD" and "value 1" (excluding the quotes (")) now restart and your windows will see the true size

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Hi all,

I have recently had a second hard drive, a 80GB Seagate ATA to be specific, installed into my home PC. The primary hard drive is a 200GB Western Digital ATA hard drive.

I had a technician help me install the second hdd, and we made sure to configure all the jumper leads and settings ok etc. In BIOS it recognizes the hard drives, I have had Linux installed onto the second hard drive.. so I know all the cables are set correctly.

The thing is, when I boot into Windows XP, I cannot see the secondary hdd when I open "My Computer"... is there anyway I can "see it" and retrieve data? When I boot into Linux I can see my primary hdd which is in NTFS and has WXP on it just fine.

I'm not sure if the issue of not being able to see the second hdd whilst in WXP is because the second one is in a Linux format or not, I suppose if it is the case and there is no way around it this thread will be easily answered...

Answer:Slave hard-drive not recognised by Windows XP!

Windows is not going to "see" a linux file system. Windows supports ie can see fat16, fat32, and ntfs.

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I have plugged in my CORE hard drive, the blue light comes on. I then insert the USB cable into my USB port in my laptop.... nothing. No "windows has detected a new device", no recognition in 'my computer', just nothing at all.

Apparently this is a very common issue, but I still have not found any solutions.

Any ideas?

Thank you!

Sarah x

Answer:Solved: CORE CnM 1TB Hard Drive Not Recognised On Windows 7, Please Help!

are we talking about a external harddrive ???

restart the computer with drive plugged in and then
enter Bios to see if it is listed in Bios.
is this drive brand new out of the box????

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Hey guys, i usually build my own systems, but my knowledge is pretty limited, i've always had 1 HD (250gb) in my pc, and now i have bought a new 1Tb hd. I have no idea how to plug it into my pc, and make it the main Hardrive to boot my new operating systems from. And usually the cables come with the HD, this time they didnt, so i dont even know what cables to get,.

Thats the exact link of my HD:
Its in norwegian, might wanna use google translator :

Or the name of the HD itself is: WD Caviar® Black 1TB 3,5", SATA

You can use all the technical words you want, if i dont get them, i might aswell research em
Thanks in Advance

Answer:Plugging in a New Hard Drive.

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Good Evening, i need some help!

For the past month i have been trying to free up my computer by moving all my music and itunes from the computer's hard drive to an external drive i recently bought. Sounds easy huh?

Since day 1 the drive has not worked (although it formats fine i can't seem to get data on there) and a couple of days before this my ipod would not be recognised in itunes and update as normal. I think the external drive is fine but when i tried it on an old computer it did not show up. So i started investigating...

Been getting the message on the new Buffalo hard drive=

"F: is not accessible. The maximum number of secrets that may be stored in a single system has been exceeded."

After doing some research i have got a hint that the issue may lie with malware / windows due to malware and possibly effecting both.

But one can only guess?...I'm a total novice in computers really need some advice as i don't want to reinstall and risk losing anything or ruin my computer so it has even more disfunctionality for the other users. I'm using Windows XP + SP-2 btw.

With the Ipod i've tried the basics (using a different usb, restarting the computer, re-installing itunes, restoring the ipod which never finishes so i'm left back on square 1.) The ipod used to show up in my computer and now does not and it's the same with this new external hard drive.

I've run SuperAntispyware and previously Malwareby... Read more

Answer:External hard drives not recognised! why?

Welcome to Major Geeks!

Please follow the instructions in the READ & RUN ME FIRST link given futher down and attach the requested logs when you finish these instructions.
If you have problems where no tools seem to run, please try following the steps given in the below and then continue on no matter what you find. You only need to try the TDSSserv steps if having problems getting scans in the Read & Run Me First.

TDSSserv Non-Plug & Play Driver Disable

If something does not run, write down the info to explain to us later but keep on going.
Do not assume that because one step does not work that they all will not.
READ & RUN ME FIRST. Malware Removal Guide

Helpful Notes:

If you run into problems trying to run the READ & RUN ME or any of the scans in normal boot mode. You can run steps in safe boot mode but make sure you tell us what you did later when you post logs. See the below if you do not know how to boot in safe mode:
Starting your computer in Safe mode

If you have problems downloading on the problem PC, download the tools and the manual updates for SUPERAntiSpyware, Malwarebytes and Spybot ( links are given in the READ & RUN ME) onto another PC and then burn to a CD. Then copy them to the problem PC. You will have to skip getting updates if (and only if) your internet connection does not work. Yes you could use a flash drive too but flash drives are writeable and infections can spread to them.
To avoid addtional delay in gettin... Read more

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I disconnected the external USB hard disc, which had been functioning normally up to now, after cancelling a backup. On next booting the computer I got the message that a USB device was not recognised which I have traced to the USB hard drive. I have checked all the connections, removed the wires from the computer and reconnected them but still no recognition. Is there a way in which I can get the computer to "see" the hard drive?

Answer:External hard disc now not recognised

Can you see the drive in
1 device manager?
2 disk management?

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I have 2 external hard discs which I use for back up purposes. Both are on the hardware compatibility list:

Iomega 1 Tb drive connected via usb (no lights and completely dead)
Seagate 160 Mg Freeagent classic (power seems to come on when connected via usb)

After installing Windows 7 32bit neither are recognised as a device or on disc management. Both work perfectly on XP and Vista

Any ideas

Answer:External Hard Disc not recognised

See this thread.

External Hard Drive Not Detected

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I have a Seagate External Hard Disk connected to my Vista computer by USB. I do not keep my Hard Disk switched on all the time because I only use it for extra storage. I never usually shut down my Computer, as I find sleep mode excellent. My problem is that often, when I switch off the HD and try to switch it on again at a later date, the computer does not recognise it. It does not register on Windows Explorer. Switching the HD off and on does not cure it. This does not happen every time, but when it does, the only way I can cure it is to do a restart, which I find takes too long on Vista. The restart solves the problem every time. I there any cure for this problem. Incidentally, every time I switch off the HD, I go through the 'Safely Remove Hardware' routine. And I have another Freecom HD which never gives me this problem, although it is used very infrequently. Also My USB devices work through a powered hub, but by-passing the hub does not make a difference, and I never have this difficulty with any of my other USB devices. Allan.

Answer:External Hard Disk not recognised.

I have not received any offers of help in response to this post. Are there no suggestions at all? Allan

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I have a USB external hard drive that I unplugged from my pc and plugged into a Mac to transfer some files from. The Mac recognized the drive and files but wouldn't let me put any files onto it, stating it was read-only. Oh well, so I unplugged it and now my pc (and others) won't even recognize the drive, giving me a message "one of the usb devices attached to this computer has malfunctioned and windows does not recognize it." Oh crap...

Here's my question - is it just a question of drivers or did that skanky Mac put some stink on the drive that is irreversable? There are files on there that I'd like to recover if it is indeed messed up now. How do I reverse this Mac curse?


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I recently bought a new motherboard but it only has 1 IDE port for hard drives. My secondary hard drive does not have a SATA port on it either, at least I don't think I saw one. Is there any other way to plug in my secondary hard drive for it to work?

Answer:Plugging in a secondary hard drive?

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I have Windows 8 installed on my SSD and I thought I'd plug in my HDD as well. I started up the PC, the HDD was found and there were no problems.
But it only took about 5 minutes and I got a BSOD. I don't know if this had to something to do with the HDD or if it might be due to something else.
Earlier I also recieved an error message when shutting the pc off, I don't know exactly what it said. Something about Memory...
Perhaps you'll find somehing in the logs as I have no idea what to look for.
It's strange that I've had two problem like this after only hours with Windows 8, while I cannot remember ever having a BSOD in Windows 7.
I would really appreciate any help! Thank you in advance!

Answer:BSOD after plugging in hard drive

Hi again.
Just wondering if there is something I can do to find what caused the BSOD? What can I do with the .dmp file? Can I find the error code somewhere?

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i have a 10GB second hard drive that i put in my computer a few months ago, and then i took it out about a month ago. now when i try to put it back it, it gives me this really long error message.

MAC ADDR: 00 03 47 D0 4B 46








it goes back to normal when i take it out, but i really need the extra space.
anyone know anything about this? if so, i would really appreciate some help.

thank you

Answer:error when plugging in 2nd hard drive

turn off your boot to lan in the bios

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Hi I recently got a Dell Poweredge PC to upgrade with Windows 2K installed on a SATA 6Y080M0 hard drive that is partitioned into 3 sections. I removed the drive and connected it to a USB adapter and another PC and copied all of the data to save to one of the other partitions. I then formatted the 'C' partition but I could only format it in FAT32 and it would not allow me to format with NTFS.
I installed the drive back into the Dell and booted XP to start a new install. When it got to the setup screen (Press Enter to install) and I pressed enter it BSOD.
I have now connected it back to my USB adapter and whenever I connect it to my computer it takes a minidump and restarts. It also does this if I connect it to the onboard SATA controller.
I'm bricking it here that this data is lost, any help would be much appriciated.
Here is the minidump...

Microsoft (R) Windows Debugger Version 6.11.0001.404 X86
Copyright (c) Microsoft Corporation. All rights reserved.
Loading Dump File [E:\Mini051809-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: *** Invalid ***
* Symbol loading may be unreliable without a symbol search path. *
* Use .symfix to have the debugger choose a symbol path. *
* After setting your symbol path, use .reload to refresh symbol locations. *
Executab... Read more

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Yesterday my computer suddenly had a bluescreen named MEMORY_MANAGEMENT. I tried to restart my computer but it would keep crashing when starting.

Here is what I have narrowed down so far. My secondary 3TB GPT internal hard drive I use for storing my libraries and the page file causes the bluescreen. When starting my computer without the drive, it does so without problems.
I'm guessing the cause for this was the loose SATA connector to the drive. I'm guessing it unplugged while the system was running, causing something to get corrupted or something similar.
Something interesting to note is whenever the bluescreen happens with that drive connected the progress for making a minidump is stuck at 0% and never finishes, leading me to think this problem is related to the page file configuration. I had to change the settings to get a dump to post.

I ran chkdsk /f on both my drives and memtest86.

Any help would be highly appreciated!

Answer:MEMORY_MANAGEMENT BSOD When Plugging in Hard Drive

Huh. After uninstalling a bunch of programs the problem was fixed. I thought I removed every program that I installed right before the issue ... Sorry to bother you guys.

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I have a Buffalo 120 GB external Hard Disk that i connect to my HP Compaq Pressario M2000. It has been with me since 2 yrs. It was always fine, except for not being recognised a few months came back all by itself. So i was fine. I have a lot of data in it which is very important. So please give me any option other than formatting it.

When i rightclick on my My Computer and go to Manage > Disk Management and it shows me my Drive as F: 111.78 GB Healthy (Active).
But it does not display the name that i have given it (Rockin Ram) and when i try opening it, it says " F: is not acessible " The file drive is corrupted and unreadable ".

I have an internet connection with unlimited download, so please let me know if i need to download some software or install anything to repair it. I will do it, but please help me with this issue.
I believe you coz my previous problem was solved by you people !

Answer:My Buffalo 120 GB External Hard Disk recognised, but not responding!

The drive could have failed. Try to plug it into another pc if you have another one.

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Tech Support Guy System Info Utility version
OS Version: Microsoft Windows 7 Professional, Service Pack 1, 32 bit
Processor: Pentium(R) Dual-Core CPU T4500 @ 2.30GHz, x64 Family 6 Model 23 Stepping 10
Processor Count: 2
RAM: 2939 Mb
Graphics Card: Mobile Intel(R) 4 Series Express Chipset Family, 1341 Mb
Hard Drives: C: Total - 146611 MB, Free - 21269 MB; E: Total - 144476 MB, Free - 142361 MB; F: Total - 476937 MB, Free - 417787 MB; H: Total - 29981 MB, Free - 16286 MB; I: Total - 8134 MB, Free - 7864 MB;
Motherboard: TOSHIBA, Portable PC
Antivirus: None

Maxtor external drive doesn't show up on either laptop running Win7 or PC running XP. It connects to the computers from mini USB to 2 USB plugs. Mini usb out > usb plug > 2nd usb plug. I've tried using both plugs on each computer though only one was needed to run well before. Nothing makes the computer recognise that it's connected. Can anything be done to get it working? Thanks for any help you can give me.

Answer:External drive not recognised

the external enclosure is probably dead...pull the hdd and connect it to the INSIDE of a tower or use a SATA/IDE to USB adapter. ( I say SAT/IDE because I don't know which yous is)

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I have a MECER external drive which suddenly is not recognised by one computer, but is recognised by the other. Both computers have legit XP Professional operating systems which are up to date. I have no problem with my other VANTEC external USB drives.

The MERCER used to work then would not, so I took it to MERCER agent who "repaired" it. Then it worked for a while then stoped again. Took it back to agent who tested it & said there is nothing wrong. Brought it back and it worked - for a while, now its gone again. All along it has always worked on my older 2ND computer.

I have tried different USB ports, changed USB cables, reformated the drive on my 2ND computer - still no luck. I get the message:

"One of the USB devices attached to this computer has malfunctioned, and windows does not recognise it"

Answer:External USB Drive not recognised

No Response? I have done a search on this forum and read through 500 similar threads to mine and still have no answer.

since my drive works on my 2nd computer the drive and the inclosure must be OK? Since both computers have XP Professional does that mean it cant be a problem with the operating system?

So that leaves the computer hardware. Is there a conflict between the inclosure and the motherboard???

Why is the problem not always there??????

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Win XP Pro SP3Last evening my computer crashed and would not restart. After leaving it overnight it restarted normally. (PSU overheating?) However one of my external drives is simply not being recognised. It does not appear at all in "My Computer". The drive was not in use before the crash, and a system restore has not solved the problem. Turning off/on the PSU to the drive has not solved the problem neither has disconnecting/reconnecting the USB connection. Any ideas as to solve this difficulty would be greatly appreciated.

Answer:External drive not recognised

I have just tried the drive in question on my laptop. It works perfectly.

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Hi, I have an external drive Transcend 500GB which works fine with all the other computers I connect it to: windows7 32bits, windows7 64bits pro, but I have now a windows8 64bits pro and most of the times, the laptop doens't recognise the disk. I have to plug and unplig the disk many times before I get a chance that the disk is recognised.The disk doesn't appear anywhere in the laptop (computer management nor explorer). Any tip?Thanks 

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I have just connected a new external SATA hard drive (Windows 10). Whilst it is recognised in Device Manager and drivers are OK, it is not recognised in File Explorer. I have tried re-booting.

Answer:New external drive not recognised.

Links below may help, using info in second link, check if drive is shown here and unallocated partition; if so you will need to format and partition.
.Above may solve problem, otherwise further research will be necessary.
Create and format a hard disk partition
External Drive Not Recognized? This Is How To Fix It In Windows

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Bought a new external HDD but my computer won't recognise it. The lights are on but no-one's home, so to speak. I've tried unplugging it and plugging it in again. Tried restarting it with drive attached. Tried it with the supplied 2-headed-USB lead and with a different lead, in several different USB ports - back, front, hub, powered hub. The best result I got was that once the computer tried to load the drivers for the device and then said the device was not recognised and got the "try again or replace the device" message. It doesn't show up at all in the device manager, so I can't even update the drivers to make it work.
This computer has done this before with a couple of other devices -most recently with a hard drive that used to work on this machine until the power supply for it burnt out, but then I had to do a fresh reload of Windows and suddenly the HDD won't show up even with a new power supply.
Usually it's a case of finding drivers or firmware or windows updates that fixes it, but since I bought this from ebay without packaging and don't even know what model the HDD is, I'm going to have trouble finding the right program for this one. The HDD did work for a few minutes on my Windows 7 laptop, so the HDD should be functioning (though it then decided to reject it from that computer, too, so maybe driver issues there, as well?)
Any ideas?

Answer:External Drive not recognised

So, you bought a "new" HDD without packaging and have no idea what brand and model number it is? There's no markings anywhere to signify the model number? Any reputable hard drive maker will indicate this very pertinent information somewhere, in addition to all the stampings of approval from various authorities (UL, CE, FCC, etc). Either the seller stripped off the placard or put the drive in a generic casing, both of which raise the suspicion meter into the uneasy zone. FWIW, I recommend you stick to brand new sealed package HDD's in the future. It brings a peace of mind as well as the recourse to return it or get warranty service. With this particular HDD, you may not even have the chance to return it to the eBay seller if it is established that it is faulty.

If your Vista installed computer has a history of not recognizing other devices, this compounds the problem. But, you say that the HDD worked only for a few minutes in W7 before it ended up "rejected" or not recognized. Maybe you have a bad USB cable. Try swapping that out and getting the HDD to work on your W7 machine before anything else. You want to establish that it's a functioning device before dealing with the problem child Vista computer.

Finally, be sure you've applied SP2 (service pack 2) to Vista and run Windows Update to get all of the latest updates. Earlier versions of Vista had device driver issues that were rectified in SP2 and later.

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