Computer Support Forum

Satellite M30-801-Unknown device after installing W XP

Question: Satellite M30-801-Unknown device after installing W XP

After Installing XP SP2 (Not Toshiba) I Get "Unknown Device" in Device Manager.
(I tried Display,Wireless,Chipset,Audio,Network,Modem and other and it's all right but i get always 1 "Unknown Device".)
Notebook is Toshiba Satellite M30-801
I need help.

Relevance 100%
Preferred Solution: Satellite M30-801-Unknown device after installing W XP

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: Satellite M30-801-Unknown device after installing W XP

Hi Alfio

please take a look here:

I've made some recommendations to another guy with a similar problem.

Good luck


1 more replies
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Hi !

I got trouble while installing XP on my L300 ... I download all of the XP driver on the Toshiba Website, preparing my setup CD with nLite and so on ...
But now, i've 2 unknow device in the devmgmt.msc console : seems to be the ACPI device. ( ACPI/GenuineIntel_family6_model15). Hal.inf is used as a driver for now.

But i failed to find some drivers for them ... Nothing in the driver I downloaded, nothing on the forum I know, even "my friend Google" didn't help me ... :-(
I downloaded the Toshiba ACPI Common Driver that I found on but still as unknow devices...

So, I d like to know if someone has ever has this kind of trouble and if he can solve it ....

Or, if someone has a wonderful idea to solve it ...

Thanks !

Answer:Unknown ACPI Device while installing XP on Satellite L300

Could you please print-screen the device manager list to somewhere? A picture may help.

At the moment, from your information: ACPI/GenuineIntel_family6_model15... , I think you need to google for a patch in Windows XP to fix the Dual-Core bug. (Windows XP dual-core fix) It will be better if you install SP3 on your computer now as this bug has been fixed.

Good luck.

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hello all. i dont come around to this site very often but i desperately need you guys help.

im trying to get a gamebridge i purchased a few days ago to work. the first day i had everything going according to plan and had it installed on there and everything, but then i was having problems with it... it wouldnt show my game screen. so i decided to install to a new usb drive.

i took the device out and tried to reinstall to another drive but it didnt work... and now when i try to put it back into the original drive it gave me an error. so i went into device manager and unistall the device manually from the original drive.

but now i try to install it again to any drive it give me the code 28 error...
someone please help me i really need to fix this problem.

thanks in advance!!!!!!!!!!!!!!!!!!

Answer:USB drive not properly installing device(GAMEBRIDGE). (unknown device code 28)

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Hi everybody.

I just bought myself a Powercolor Radeon HD 4890 yesterday. After installing the card and the required drivers everything works like a charm. However, every time I start up my PC I get a message saying that a new device has been found on my system. On checking Device Manager I found an "Unknown device" entry under "Other devices".

I'm attaching a screenshot of Device Manager.

Are there any drivers I'm missing? It only happened after removing my old card (after uninstalling all its drivers) and installing the Radeon.

Any help is greatly appreciated.


Answer:Unknown Device In Device Manager After Installing Radeon HD 4890

I have a Powercolor Radeon HD 4890 (I also have a Gigabyte 4890 and XFX 4890 in two other PCs). I think you need to install the latest ATI Catalyst Suite. You may have installed the driver only package. Anyway, I think it has to do with the HDMI capabilities of the card. High def sound is built into the card (the HD part of the card name) and the HD sound driver is part of the Catalyst Suite. When you use an HDMI cable to an appropriate display, HD sound is also transmitted through the same cable from the Radeon graphics card.

Of course, be sure to install .NET Framework 2.0 as it is required before you can install the full Catalyst Suite. The HD sound driver won't install without it. At least I had trouble before I installed .NET 3.5. I went to Windows Update and installed .NET Framework 3.5. 2.0 is included in that update and 2.0 wasn't available separately.

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I have a very similar situation.

I have a windows 98se machine runnong on an Intel Celeron 600MHz with 128MB of ram.

The OS was just installed.
I am trying to instal an HP USB burner - I used this device before with no problems.

The drivers are located on a diskette. The manuf instructions advise to connect the power and usb cables and boot the pc with the diskette in the drive when windows finds the new hardware select the floppy drive.

When the pc is booted is finds new hardware lists it as "unknown device" and does not promt me for any input. If I go to device manager the device has a red x. I've tried to remove the device and reboot - same thing. I've tried to update the driver and it says the best driver is already installed c:\windows\inf\usb.inf

The ref url was resolved by changing the order of connecting the cables.....I have tried ever combo I can.
Can someone please tell me how to point to the correct drivers ?


Answer:WIN 98se auto installing a usb device as UNKNOWN DEVICE

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I have installed Vista on my Satellite A100-771. I have also installed all the drivers downloaded from the Toshiba Support site.
But when Vista starts, one message come out always ----- new hardware founded. I really don't know which hardware it is.

There is a unknown Device in device manager, and windows cannot find the driver for this device online.

Can anyone help me?
Thanks a lot!

Answer:Vista on Satellite A100 - Unknown device listed in device manager

Hi there,

may I ask you which drivers you?ve downloaded? And regarding the new founded hardware: Did you checked your device manager for that device?
What is standing there as the non-installed device? Mass-storage or multimedia? Please be more precisely with your explanation and don?t forget the drivers to list.


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Hi everyone,

I have a Satellite L500D and in device manager listed under Other Device I have Unknown Device Listed. I have installed all drives listed on the Toshiba page without any success, has anyone had this before and if so could you please tell me how to fix it.

Answer:Satellite L500D - Unknown Device listed in device manager

Can you please tell us which OS do you use?

Anyway, how to identify unknown device in device manager you can read here

Please check it out and send some feedback.

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dear toshiba ,
i have unknown device in device manger for satellite C50D-B1107,part number PSCN5V-00700HAR
although i download the needed divers from toshiba website ,then i follow steps in technical knowledgebase (how to identify an unknown device)
the driver have ven_1022 and dev_7814 ,searching for the needed driver I found noting and I wounder why this driver not includred in motherboard driver package
so I nee your support to get this driver
waiting your feedback soon
kareem maaty

Answer:Satellite C50D-B1107 - unknown device in device manager

note os: win 7 32bit

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Hi everybody,

I've got a A100-926, in device management it show me that there's an unknown pci device at bus 7; function 3, but there's no way to know what is it and how I can install it because if I push reinstall driver it can't find the right one onto the toshiba tool cd.

I don't know if it's related to this but in some application the button delete must me pushed for more than a second to work :-(
Is there anyone that can help me?


Answer:Satellite A100-926: unknown device bus pci7; device:6; function: 3

Did you reinstall the operating system on your notebook?

Usually the notebook is delivered the Toshiba image and there should be unknown devices in the device manager?

In the forum some guys have placed the link to the very useful Toshiba document.
It described how to identify the unknown devices.

Maybe it will help you to find out what device it is.
Then you can download the right driver from the Toshiba page?

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I am not able to find the one of the Drivers. In Device Manager when I check details of the 'Unknown Device' it says 'TOS6205/ACPI compliant'.

I have tried searching for the 'Bluetooth stack' Driver for my model in the Driver Download pg. But i dont seem to fine one.

Details of my laptop:-
Model :C660-A275
Short Model :PSC1NV (got this from Part No)
OS : Windows 7 Ultimate version 6.1.7600 (build 7600) (i guess it is 32 bit). (laptop is x86)

Please suggest some solutions at the earliest.


Answer:Satellite C660 - unknown device tos6205 in Device Manager

goto drivers page

enter everything except PSC1NV

take & set up
Bluetooth Filter Driver Package
Bluetooth Stack

that's all

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Dear All,

I bought a Satellite L30-PS33 with Vista but due to driver issues with my existing peripherical equipments, I decides to change from Vista to XP.
I have a problem with internal HUB usb, even if the installation is OK with windows XP generic drivers when I plug an USB devise, I have the message: Unknow device.

Can you give a link to find the good drivers I have to use in my computer?
It's very difficult to use a computer without any USB equipment?

Thank you and I hope you have any solution for me.

Best regards.


Answer:Satellite L30-SL33 : Unknown device after pluging external device to USB

There are no USB drivers for any Windows operating system.
Fact is that USB driver are a part of the Windows system and you will not find any 3rd party drivers for a USB port.

In your case I would recommend updating the BIOS and to update the Win XP to the latest state. All XP patches and updates should be installed!!!

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Hello there!

I would be very grateful for any help/hints if somebody has an idea what to do....

My gf has the above mentioned laptop (w/o preinstalled OS) and we can not get the display adapter to work properly - situation is as follows

1) mobile intel 4 series express chipset family and an unknown device with a question mark in device manager
2) both are on the same PCI BUS 0, device 2?
3) intel is not working because it has no free resources (should I delete the unknown device?) to work with
4) HW ID for the unknown device is pci ven_8086&dev_2A43 and for intel is pci ven_8086&dev_2A42 (so basically the same, right?)
5) last, but not least, if I go to Desktop-personalize-advanced (first of all no 1280*800 resolution) i see under adapter type: . Exactly, nothing... under properties, this appears: non plug and play device, Super VGA and under driver, I see just the status and option to Stop, Disable, Automatic, Demand.... the device on startup... .If i disable it, the display just does not light up when the laptop is turned on....
Any ideas? I am going insaneeeeee......

Vista Home Premium, all other Toshiba SW installed (value pack, intel, BIOS 1.9, etc... - maybe BIOS did this?!)

Thanks in advance!!!

p.s. maybe SP1 that I am installing now will help?!

Answer:Satellite L300 PSLBGE - Unknown device in device manager


Wait a moment: I have checked Vendor ID and Device ID on and this device is the Intel graphic card. So I think this is the reason why you can?t change the screen resolution.

I assume that you have forgotten to install the display driver. Check the Toshiba website because there you can download the driver: => Support & Downloads => Download Drivers

After this you shouldn?t have any exclamation marks anymore.

You can install SP1 for Vista but this will not solve the problem with the missing display driver. But you should install it because it contains a lot of security updates they are important. Furthermore I would recommend to install SP2 for Vista.


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It WinXP Pro + SP 3.
In Device Manager display, as an unknown device. Try all drivers, who were on a disk along with the laptop, nothing helps. Give the solution!

Answer:Re: Satellite 5200-701: Unknown device in the device manager.


who should give you THE SOLUTION? I mean, you tried all drivers and nothing did installed... So, does your machine run properly? Does some device not work like it should?

Please check this firstly before installing all drivers without any success. Try to guess which device it could be, so then we can search for some solution.
A good beginning would be to check the device in the device manager and write some of the information which is contained in the Properties window of the device.
Please post the details which are in the properties of the device, maybe someone here in the forum can find out which device won?t work.

I assume also that the SP3 makes some problems, so another good option would be to deinstall the SP3 and go back to SP2.


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Hi, W530Product: 244752UBIOS: G5ET95WW (2.55 )Windows 8.1 - Installed from scratch.  I was able to install and configure all drivers but one. I found a tread that suggested installing Lenovo Setting Dependency Package to fix it on a different lenovo model. I tried it without any success.  The driver id of unknown driver is "{48126E0D-4BDD-4D26-8A24-569C7AB522D6}\SettingsDriver" Google did not help. Any help is appreciated.  Eduardo    


Go to Solution.

Answer:W530 - unknown device after installing windows 8.1

Right click it, click uninstall, then scan for hardware changes. I've had a couple of issue where that fixed it. 

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I reinstalled Windows XP Pro on an IBM Thinkpad R51 (1836) - I installed many drivers from the lenovo website; however, there is on device showing in "device manager" "Other devices" that has a yellow exclamation point next to it.   -- I tried installing all of the appropriate drivers from the website; but evidently I have missed something...  Your input is appreciated..  Thanks.

Answer:Unknown Device after re-installing XP-PRO - ThinkPad R51 (1830AKU)

Hello, please install Lenovo System Updater, it will install your driver. But donŽt update all at once and beware there are bios updates. Before you have to install MS NET 2.0. YouŽll find both at Lenovo support page.

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I installed the drivers for xp from intel , IT`S OK.

But one unknown device have nto a drivers?
Please help me

Answer:Unknown device on Satellite L40-139

Hotkey Utility ?

Sound ??
Modem ???
WiFi ????

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I have this Value ID:ACPI\VEN_HPQ&DEV_0004ACPI\HPQ0004*HPQ0004

Answer:Unknown device on PCI Express Root Complex after installing ...

That is the hard drive protection accelerometer.  Try this: If this is "the Answer" please click "accept as Solution" to help others find it.   

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i just installed a radeon x800 gto. previous card was a radeon x300. it seems to have installed fine. i get "x800 primary/secondary" under the display adapters in device manager.

but there is also an unknown device in device manager. i have tried the "update" driver with the video card drivers cd in the drive. i have tried downloading the latest drivers from the ati site. the card has a power lead and i have connected that too. does anyone know what this is?

windows xp
abit sg-95 motherboard
intel pentium D
1024mb ram

Answer:Solved: unknown device after installing new graphics card

solved. what had actually happened was when i put the card in, it had pushed into one of the empty memory modules clips. whether this was making the computer think that there was something actually in the module i don't know. it could also be that the card just wasn't seated properly because it was kind of forced against the clip and didn't seem to be in the pci express slot just right

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In devicemanager on my windows XP system it says "unknown device" in the information I can get that the device-ID is ACPI\SMCF030\4&2A083901&0
and his place is on Intel(R) 82801DB LPC Interface Controller - 24C0

Does someone know what this is?
It is anoying not knowing and it sounds like somthing importent.
I have installed everything under drivers for my device.
But, the only thing that I am aware of not working on my computer is the frontbuttons (Mode, skip, play/pause and stop)

Answer:I have an unknown device on my old Satellite 2450-201

Maybe this document can help you

Check it out!

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Hi all,

I have just intsalled WinXP on Satellite C660-12V PSC0SE. I installed already all drivers, but still I have problem with one item:
What is it? I cannot find any drivers.
It is new C660 without operating system

Please help

Answer:Satellite C660-12V and WXP - unknown device

For unknown device identification use

Put TOS6205 into ?vendor search? option and you will find out which device must be installed.
If you need more assistance please let us know.

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I'm new to this forum but not new to using Toshiba products.
Anyway, about a couple of weeks ago I started having problems with
my USB ports in the sense that they all started to die one by one: first
the upper right, then the lower to be followed shortly by the Sata/USB combo
port on the left(kept my mouse adapter there).

I have not used anything other than the regular on my USB ports, you know memory
sticks, external HDD(I used a Toshiba StoreArt 1TB), my mouse and pretty much it.
Naturally I started looking for a solution to my problem and tried everything, except
for a BIOS update.

I don't know what else to do, so I hope smbd having dealt with the same problem
can help me restore my USB ports functionality.

I'll post some screenshots:

Answer:Unknown device under USB on my Satellite L500-1XZ notebook

Hello and welcome to Toshiba support forum.

On this virtual way it is not easy to say what is wrong there and give you exact diagnostic. In my opinion BIOS update is, at the moment, not necessary.
I don?t know if you have installed some additions software for usage with some external device but what you can try now is to reinstall chipset driver.

I have checked Toshiba download page and your notebook is supported for Win7 32 and 64bit so you can find it there. I wanted to post link here but I don?t know which version do you use.

Please do it at first and post some feedback.

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I have a toshiba satellite a100 pro. It came with XP installed.

I have recently installed a bigger hard drive, and upgraded the operating system to Vista Ultimate (32 bit). I have downloaded and installed all the drivers from the toshiba website but I still have one 'unknown' device in the device manager with a yellow exclamation mark, it the details tab it says:

Can anyone please tell me what this device is, and where can I get the correct drivers?

Answer:Satellite Pro A100 - unknown device TOS1900


Did you install the Toshiba Value Added Package?

No? Do this and this unknown device should disappear


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I have installed the Win 8.1 Enterprise Version on my Satellite P70-A. All devices besides ACPI\TOS620A\2&DABA3FF&2 are supported with correct Drivers.

Does anyone know which device it is, for instance Bluetooth Driver?
The device Manager confirms that I have Bluetooth devices for Andoid, Generic Bluetooth and Microsoft Bluetooth.

I have downloaded and executed the exe file. I'm wondering that this exe is not displaying something like "Successfully installed" or so.

So I'm not really sure if Bluetooth is really installed and if Bluetooth is the issue.


Answer:Satellite P70-A : Win 8.1: unknown device ACPI\TOS620A

The unknown device ACPI\TOS620A seems to be related to an Toshiba HDD Protection Utility.
Visit the Toshiba EU driver page and download the HDD Protection Utility released for Windows 8.1

Should solve your problem


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hi there.

My CD/DVD Rom device (toshiba SD-C2612) stopped working- it was still registering as a drive, but wouldn't read disks - so I got a replacement and that doesn't install at all.

I also noticed that in Device Manager - under IDE ATA/ATAPI controllers - there's an "unknown device" which is called "hdc" (hard disk controller??) which has no drivers installed and cannot find new drivers when I go to update them. I've disabled the device and that stopped the old cd/dvd rom from being recognised and when I reboot it reinstalls the hdc but it is still registering as a unknown device.

Any ideas?

Thanks in advance

Answer:Satellite Pro M10: Can not install SD-C2612 - hdc IDE unknown device

I am afraid this is a firmware issue.

Can you tell us the firmware code (from the sticker on both, original and replacement drive?)

SD-C2612 - ??
(Drive Rev. ???)

Maybe we will find out some more info about your drives through them.



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Satellite A200 PSAE6E.
Installed Windows XP instead of Vista.

Everything is fine instead of one thing. Device manager shows that PCI Memory controller is unknown device and showed in question mark symbol.

What sould I do? I think i installed all drivers that were possible to download from Toshiba support.

Any suggestions? Really appreciate.


Answer:Satellite A200 - Unknown device after XP installation

You will never find a driver for PCI memory controller on XP.
This hardware is only supported by Vista and so you can ignore this yellow exclamation mark.

By the way, this I have found on the Toshiba website:

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Hi there,

I recently installed Win 7 home premium on my laptop.
In the controlpanel you will find the topic "show devices and printers".

Doing so you will see the devices that are connected with the laptop. In the icon for my Laptop (toshiba L300) there is a yellow trangle with an! I am instructed to install a driver for an "unknown device".

Doing so (by choosing the option "allow this solution) does not bring me any further. The wizzard doesn't find any drivers and I still don't wich device is ment.

I've found the unknown device by selecting "show hidden devices" in the device management, so here it is:

The hardware id says:
ACPI\TOS1901 TOS1901

changeinging the attribute or property (sorry guys, my version is dutch and I do not know the proper englisch name) to "name of the device" it says:

Anyone got any suggestions?

Answer:Satellite L300 - unknown device TOS1901


Have you also checked the device and vendor ID in device manager of this device? Select it and click on properties. Then you can check the ID on this website:

And what drivers you have installed exactly?

In my opinion you should try to install the Toshiba Value Added Package. You can find it on the Toshiba driver download page.

5 more replies
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Hi I use Satellite A200 PSAE6E
I have installed 64bit vista.
when I look device manager and select "show hidden devices" option. I see an unknown device.
I tried to search with that but I couldnt find anything do you know what is that?


Answer:Unknown device (TOS1900) on Satellite A200

Hi friend,

theres another post with the same issue:

the discussion is about this device. I assume that this could really be something like the HDD acceleration sensor (the sensor which parks the heads of the HDD when the machine is moved faster then usual).

Maybe thats then a device which can be left since you won?t get any drivers for it. Another good option would be to google for that error..


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I have the Satellite 1955-S803 notebook with WinXP.
Device manager show me an unknown device "LPC interface". All drivers for motherboard had installed. Maybe anybody knows how to solve the problem?

Answer:Unknown LPC interface device on my Satellite 1955


Well, it?s strange. Try to remove this device from Device Manager. Then reboot the unit and start ?Add Hardware?. Also you can check the Toshiba website and the supported drivers for this unit. Check this link:


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Which is the Windows XP driver for this device :

HDAUDIO\FUNC_01&VEN_1002&DEV_AA01&SUBSYS_00AA0100& REV_1000\5&181BB7A3&0&0001


Answer:Satellite A200-1PD - how to identify unknown device?

I do not know for sure but it must be something with sound. If you have problem to get sound working under WXP please check

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Hey everyone,

I have re installed windows 7 32-bit in my Staellite C850-A670, part no. PSKC8V. There is an unknown Device with Hardare Ids:

IUSB3\ROOT_HUB30&VID_8086&PID_1E31&REV_0004&SID_FB 311179

Please hep me find identify the driver for this device.

Thanking you in anticipation.


Message was edited by: aleempk

Answer:Satellite C850 and Win7 32-bit - Unknown Device


You can identify unknown device if you use page.
8086 - Vendor search > Intel
1E31 ? Device search > USB 3.0

Try please to install USB driver for your machine. You can find it here .
Check it out and post some feedback.

4 more replies
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Have a Satellite A500 that I have recently restored to factory settings from the Recovery partition and reinstalled my Win7 upgrade.

I have a couple of unknown devices in device manager and have no way of knowing what they are.
They would normally be a problem for me except I am also getting USB disconnect sounds every now and then, and warnings about USB2 devices being plugged in to a non high speed port.

I of course have nothing plugged in at the time so I expect there is some device that is malfunction and not being detected properly.

The devices I first suspected (webcam, tvtuner, touchpad) all appear in device manager normally so I am at a loss as to what's causing this.

Any ideas?

Answer:Satellite A500 - Unknown device - USB problem


Did I understand this correctly?

You have restored the A500 to the factory settings using the Toshiba recovery procedure and the unknown devices still appears in the device manager?

That?s strange because the Recover disk should set the notebook back to the same state like at the first day of purchase. So usually the unknown devices should not appear and all drivers should be installed properly.

However, I found an interesting and in my eyes useful HowTo document which should help you to find out which drivers are missing in your case.

+How to identify an unknown device (e.g. Wireless LAN module)?+

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I installed Windows 7 Ultimate (Genuine) installed all the drivers I could find in Toshiba's site and almost all Windows Updates but I have one device that is not recognized :

1) Unknown Device

Answer:Satellite A500-1GH - Unknown device after Windows installation


Unfortunately I think nobody here can say you what device driver is missing exactly?
Can you post the vendor and device ID?

Maybe this document can help you a little bit:

2 more replies
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satellite L300 OS - Vista 32

I installed new software to use USB port to connect the board and program that board During this installation some things went wrong and all my USB port are not responding or not working at all...

When i checked the Device Manager it shows like Other device -> Unknown device..

I install the chipset from Toshiba download and still I can?t solve the prob....

my USB all port not working..
my WiFi is not working..
my Camera is not working...

rest of all work i guess any suggestion to solve this problem?

Answer:Re: Satellite L300 - Unknown devices in device manager


Could it be possible that the 3rd party software which you have installed to use the USB ports has muddled up the whole system?

The driver for the unknown device which appear in the device manager can be identified very easily.

I recommend checking this HowTo:

You need the Vendor ID and Device ID and using these both ID in pci database would help you to find out the right driver.

By the way: if your Wlan and cam don?t work, install the drivers? die you already tried this?

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Hi !

I have this kind of a problem: I am working with my external Toshiba 3,5 alu case HDD 500GB and after a while of copying files into laptop it dissappears and shows up that device wasn?t recognised.
Can this be caused by not enough power in USB port?

THX for any help or workaround

Answer:Satellite A200-1SI - external HDD after a while shows up "unknown device"

Hi there,

yes this may be caused by the fact there is not enough power supplied by the USB port. firstly note that 3.5inch external USB hard drives are usually designed to be used with desktop systems due to their higher power requirements (this is also the reason that many require an external power supply of their own). my suggestion would be in future buy a 2.5inch external USB hard drive designed for use with laptops. another reason that the hard drive may disappear while copying files is that there may be a problem with the USB cable connection between the laptop and the external HDD. i would suggest checking that both ends are plugged in securely and not to place any pressure on the cables and to keep them stable.

i hope this helps you with your matter

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Just bought a Satellite M50D-A-10L and after 1 week, the HDD failed. Of course, I had to replace it on my expenses, because warranty would do so in about 2 weeks, which was too long to wait for me.
Anyway, I've lost also the preinstalled Windows 8.1 but that's not a tragedy, because I reinstalled it and everything is working fine.
The problem I have I that one of the drivers is unrecognized by "Device Manager". The device is named "Device ACPI". Any idea what missing driver is all about?
Thanks in advance for your answers.

PS: Not sure how to attach a screenshot of "Device Manager" with missing driver...

Answer:Satellite M50D-A-10L - missing driver for unknown device

Have you tried to identify unknown device using vendor and device identification?

2 more replies
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I have a toshiba C70D-B-306 (psclee) laptop and I reinstalled windows 8.1 from a seperate DVD because i exchange the default harddrive for a fast ssd disk.

Everything works but in my device manager I have 2 unknown devices listed (with exclamation mark), as far as I know I downloaded all available drivers from toshiba support website for this laptop and installed them but the 2 unknown devices simply will not disappear.

Can someone tell me which driver I exactly need for these 2 devices?

The 2 devices are:

As mentioned, i allready downloaded all drivers for this laptop and installed them, windows is ofcourse up-to-date. Also I let windows search for drivers on the Internet and on the whole drive, but no drivers where found.

Who can give me the golden tip?

Answer:Satellite C70D-B-306 - 2 unknown devices in device list

There is a good method in order to find out what drivers are missing.
First of all you should check the DEV (device) and VEN (vendor) IDs

Here is an short instruction how to find this details:

Knowing the device and vendor ID, it should not be a big deal to get the right drivers.

At the other hand you should install also additional Toshiba software (Toshiba System Driver) released for Win 8.1
Please note also that there are two Win 8.1 driver areas: ?Win 8.1 update? and ?Win 8.1 32bit/64bit? categories
In case you would not find all drivers within the Win 8.1 update check also the Win 8.1 32bit/64bit categories.

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I got my L550 (Wwindows 7-64 bit) reinstalled.
Now, the webcam will appear as "Unknown Device".

The software on the Toshiba page I have installed. Unfortunately you camera is still unknown in Device Manager.

Solution / or possibly the "inf" file.


Answer:Satellite L550-11E - Webcam appears as Unknown Device


The webcam driver v is available on the Toshiba driver page and it should work properly.
Did you check in BIOS settings in webcam is enabled?
Please do that firstly!

BIOS -> Advanced -> System settings

If webcam is enabled, ensure that Win 7 Value Added Package has been installed before webcam software.

If this will not solve the installation issue, I would recommend trying an newer version of webcam software which is released for newer Satellite notebooks series

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I guys

I downgraded my new laptop from Vista to XP.

But there is a problem:
I can't find all the drivers for the devices.
One is being labelled "unknown device"

Is there a pack or a list to where to get all the drivers.
This is getting myself crazy

thx guys

Answer:Unknown device on Satellite A200-SAE6E after Win XP install


It could be Robson (intel turbo memory). But unfortunately there are no drivers for Windows XP

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ACPI\TOS1901 *TOS1901 <--- This is the unknown device after BIOS update to 5.10 on my Satellite A100-153 notebook

now vista shows it in device manager as unknown ; the TOS1900 was shown too, but after installing Toshiba Value Pack for Vista it is gone.

Please help. WHAT IS: ACPI\TOS1901 *TOS1901

Answer:Unknown device on Satellite A100-153 after BIOS update to 5.1


ACPI -> Advanced Configuration and Power Interface
ACPI defines hardware and software interfaces that enable OS-directed configuration and Power Management to enumerate and configure motherboard devices.
For example: ACPI is needed for the stand by and hibernation mode.

Now to you question; the new BIOS was updated and configured for VISTA usage.
It seems the VISTA was not compatible with the previous BIOS version because of the ACPI interface. Now you can install the Vista on the notebook but it seems you will need an driver. Possibly new chipset driver release could help. But as you probably know, the drivers are not available at this time. Unfortunately?

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I have a problem with battery driver. I'm using Microsoft Windows XP professional. Manager of devices shows battery 2x (unknow devices!). Anybody have the same problem?

I'm waiting for answers. I am greeting everyone. Sorry for my English

Answer:Satellite L500-1GE - Battery unknown in device manager


There is no battery driver that you mean. It?s a part of Windows and you don?t have to change anything on it.

So please check the device manager again. What devices you mean exactly? Have you already checked the device and vendor ID?

Maybe you should try to remove both entries and restart the notebook. After this the drivers should be installed automatically.

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I have recently reinstalled Windows on my computer, after the installation a problem have occured. With an interval of 10-15 my computer freezes for about a second - the computer doesn't react to input, and if a sound is playing it repeats over and over.

I don't know if it has anything to do with it, but when I boot the computer i get the error message "failed to read handler!" I have noticed that I have one unknown device in my device manager, the Location: Location 65535 (Internal High Definition Audio Bus). I can't find the driver.

I don't know if the problems are related, I just want the freezing part to be fixed.

Best wishes

Answer:Satellite Pro A100 (PSAAC) - Freeze for a second and unknown device


have you installed a sound card driver? Anyway, how to identify unknown device, read here:

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I have the following listed as question marks in my device manager:

?Multimedia controller
?Network Controller
?Unknown device

I have installed the sound and it works
I have installed the network adapter and it works

What are the above devices?

Answer:Satellite A200-1LA - unknown devices in device manager

Wait a moment. Which operating system you try to configure?

Have you checked on Toshiba download section if ?installations Instructions? document is available? If you just follow this document you will install all you need and everything will be OK.
Anyway, multimedia controller can be Multicard reader device, network controller is probably wireless card. I cannot say what unknown device is because I do not know which drivers you have installed already.

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I just installed Windows 7 64bit into my laptop Toshiba Satellite A500 -132 and in device manager its saying that there is unknown device ACPI\ENE0200. Do you know what drivers should I install?

And the second problem is that when I installed Value added pack there is usually a red light shining out of the headphone jack, but when I installed the audio driver the light disappeared and doesn?t shine anymore.

Is there any fix for that?

Answer:Satellite A500 - unknown device after Win7 installation

It is the ENE CIR Reciever or at least it was for me.

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Hi All

Just installed vista on my A100-237.. after doing the BIOS upgrade and installing the Value Pack "unknown Device" with the location "on Microsoft ACPI-Compliant System" appeared in my device manager, any ideas on how to sort this out??

Thanks in Advance!

Answer:Satellite A100-237: Unknown device after Vista installation


Could you please check if you can see the "Batteries" entry under "Computer? in the device manager?
As far as I know the batteries entry should have a "Microsoft SMART Battery" & "Microsoft SMART Battery Subsystem?.

If there is an unknown device this could have something to do with Microsoft ACPI Compliant Embedded Controller.
In such case it seems you need a driver for MS SMART Battery & MS SMART Battery Subsystem.

pleasae check also this thread;

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I have been having problems with my camera in that it is not visible to the Toshiba software or to Skype. Rebooting cures the problem but then it disappears again after a while.

I downloaded the Webcam software from the Toshiba support webpage and reinstalled it successfully but now the webcam has disappeared completely from the Device Manager list and simply shows as unknown USB device.

How can I get it back ?

Answer:Satellite L500-19X - Webcam listed as unknown USB device

Are you plugging in any USB Devices?

High powered devices such as 3G Modems can draw excessive power from notebooks and cause USB devices/ports to shut off for safety.

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I've just completed a *CLEAN* Vista install on my A105-S2091 Satellite.
Installation was smooth and clean.

After Installing all of the recommended *DRIVERS* (I chose not to install *ANY* Toshiba utilities) ,
I was left with two unknown devices in the device manager.

One was ACPI\TOS1901.
After searching the forums, I found a thread that indicated that installing the Toshiba Supervisor Password Utility, would fix
this device, which it did.

I'm left with Unknown device ACPI\TOS1900. A search of the forums here havenot been helpful.
I +really+ don't want to install any Toshiba utilities that aren't absolutely necessary.

Does anyone know what drivers need to be installed to fix the Unknown Device, ACPI\TOS1900?




Answer:Unknown Device ACPI\TOS1900 on Satellite A105-S2091

I think you need the driver for the Toshiba HDD-Protection?
Maybe this helps to get rid on unknown device.

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I am working on a customers Satellite M200 Laptop, the Realtek sound card will not install.
I have even ran the restore partion and did a return to Factory settings and all I get is *Unknown Device on High Definition Audio Bus* listed under other device's

No sound card is listed but I do have a modem listed.
I have tried to install the correct drivers from the Toshiba web site but no luck.

I feel it is an issue with Microsofts UAA but can not figure the exact problem out.

Thanks in advance.

Answer:Unknown Device on High Definition Audio Bus on Satellite M200


I presume you are using the XP OS. Is it right?

Well buddy, had an similar issue and was able to solve it.
You need to install firstly the MS hotfixes / patches.
AUDIO Patch 1: KB835221
AUDIO Patch 2: KB888111

These patches have to be installed at the beginning before any of the sound drivers would be installed on win XP.

After you have installed the patches you could follow with Realtek sound driver installation

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Hello Community,

i have re-installed my Satellite C850D-12U PSCC2E and now I have an unknown Device.
Hardware-ID: ACPI\VEN_TOS&DEV_6205

I've done some general internet searches and it seems as though this is to do with Bluetooth.

I installed the driver from the Toshiba website, unfortunately the problem is not solved.

Have you some ideas whats happend?

Sry for my bad english ;-)

Greetings PatienTT

Answer:Satellite C850D-12U - Win8 64-bit with unknown Device ACPI\VEN_TOS

According notebook specification your notebook was delivered with Win8 64bit OS so have you reinstalled original recovery image and use notebook with ?factory settings? now?

Notebook with ?factory settings? should not have such problems so I don?t understand why do you have this problem.

Can you please post more info about this unknown device?

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Good afternoon everyone.

I have an unknown device ACPI\TOS1901 in Satellite A305-S6839.

Any ideas to solve this issue on windows XP?

Thanks in advance.

Answer:Unknown device ACPI\TOS1901 in XP Satellite A305-S6839


I remember this issue and it was already asked here in the forum.

I searched a little bit a found the forum thread providing the link to the Toshiba doc.

Check this:
[After the installation of Windows a unknown device is visible in the Device Manager |]

The unknown device could be solved installing a "Password Uitility" or the "Supervisior Password Utility?


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Just taken delivery of some new Satellite Pro L870 we have reinstalled Windows 7 but seem to be missing some drivers. I have downloaded installed all the available drivers from the dowload site however we still have one unknown device.


From looking around this may be an IMEI chip but I have not been able to confrim the DEV ID from any of our usually sources. Anyone have any idea what this is and where I could get the Windows 7 64 bit drivers?

Message was edited by: Bashfuluk

Answer:Satellite Pro L870 - missing some Win 7 drivers - unknown device DEV_1E3A


Please check this HowTo.
+How to identify an unknown device ?+

From my knowledge the Dev_ID 8086 belongs to Intel
So it must be some Intel driver.

Did you install all drivers from Toshiba driver page? Do that?

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Since today, the webcam on the laptop of my wife is not working anymore.

I checked the device manager and I have a USB Unknown Device; so I have downloaded the drivers from the Toshiba website.
After installation, the web cam HD is appearing in the Imaging section.
When I launch the Toshiba software "web camera application" it light up the camera then blackout.

I check back the device manager, USB Unknown Device is back in the list and " HD camera" disappear..

Of course, I would like to avoid the reinstall

Answer:Satellite C870-14T and Win7 - webcam not detected - USB Unknown Device

It is not easy to say what is wrong there especially if the cam is detected by the system again and again. It looks like system can detect connected device but it is confusing for me why preinstalled driver cannot works properly.

At first try please to enter BIOS settings and check if there is option for webcam. If yes be sure it is enabled properly.
Try please to repeat action with driver installation just to see if the same will happen again.
In case that webcam is recognized properly again try to test it with other webcam application like Skype. Does the same happen again?

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I'm getting one Unknown Device in windows 7 on a toshiba Satellite C850-19D.
The hardware ID is ACPI/TOS6205.

Al suggestions found in the forum and net didn't work:

It's not bluetooth: Installed both of drivers in the drivers download page, none resolved the issue:

Installed HDD/SSD Alert Utility and PC Health Monitor due to the suggestion that it was an issue with HDD Protection Utility:

Can anyone help with this?
Thanks in advance

Answer:Satellite C850-19D - ACPI/TOS6205 Unknown Device under Windows 7


The ACPI/TOS6205 seems to be Bluetooth device.
Satellite C850-19D was equipped with an Realtek RTL8188CE-VLSA WLan / Bt combo card.
Therefore I?m sure its BT device.

You said you installed the BT driver but it didn?t work.
I think you did it wrong.

The point is that WLan / Combo cards needs an BT driver filter package.
SO you should install: Realtek WLan driver, then Realtek BT driver filter package and finally the Toshiba BT stack.


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My inbuilt webcam stopped working. I downloaded and installed the last available driver (Chicony but still the camera doesn't work. When I run the camera assistant software it tells me that the camera is disconnected. On the other hand there's a Windows notice telling me that there's an unknown USB device (Port_#0001.Hub_#0002) which I suppose is the camera. I tried googling the question or searching this forum but I've got no answer. I'd truly appreciate if someone can help me find a solution. Just in case here're my PC details:

Satellite A200-1DY
Intel? Core?2 Duo
Code: PSAE3E-01F00GSP
Windows Vista Home Premium
Service Pack 2

Thanks in advance!


Answer:Satellite A200 - Webcam disconnected "unknown device" message


> On the other hand there's a Windows notice telling me that there's an unknown USB device (Port_#0001.Hub_#0002) which I suppose is the camera

Yes, this could be the internal webcam.
Seems the driver has not been installed properly.
What to say; first of all remove the old webcam software from the system.
Then clean the OS using an tool like CCLeaner for example.
After that go to device manager and remove the unknown device.
Reboot the unit.
Install the webcam software again and check if the device has been recognized again.

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Have just installed XP on a U300, I've downloaded every driver from the website.
Now i've got 2 Unknown devices ! Any ideas of what these could be ?


Answer:Satellite Pro U300 - 2 Unknown devices in Device manager running XP

One could be the unknown PCI memory manager.
This PCI memory controller is Intel Turbo Memory also called Intel Flash cache logic chip.
It is a new technology designed to support new Vista capabilities.
There is no driver for it for Windows XP, because XP doesn?t support the cache function. Only Vista supports this!

I have no idea what could be the other unknown device. Check simply what devices don?t run and you will know what it is!

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Relevance 60.27%

Will take any help at this point..............

My nephew has just reformatted his Satellite A110-162. However he has lost his wireless internet amoung other things...................

In unknown devices he has:

Ethernet controller
PCI device
SM bus controller
Video Controller (VGA compatible)

Is it a motherboard chipset driver that is needed?
Just spent the last 3 hours on this getting no where.

Any help would be great

many thanks in acvance


Answer:Satellite A110-162: unknown devices in device manager - need drivers

hi vorlon,
download all needed drivers from the toshiba website and install the drivers.
after that restart machine.
this is it - everything should be ok!

installation sequence:
PCI device
SM bus controller
Video Controller (VGA compatible)
Ethernet controller

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Relevance 60.27%

I have an unknown device ACPI\TOS1901

Any ideas to solve this?


Answer:Unknown device ACPI\TOS1901 in Vista on Satellite A100-215

At me the same problem:
Satellite A100-847 (PSAA9E)
BIOS v5.60
Who can help?

4 more replies
Relevance 59.45%

The *webcam* on my *Satellite Pro L670-18F PSK3FE* which is running *Windows 7 64-Bit* worked fine until this week. My notifications bar started to say *"unknown USB device"* and when when I went to use the webcam it was no longer working.

When I turned the webcam off in the BIOS the notification stopped but when I turned it back on the notification kept coming up again. The unknown device is clearly the webcam.

I have updated my BIOS and tried system restore.

I have also downloaded the driver for the webcam from and have been trying to run that - +but it NEVER seems to finish installing!+ I will keep trying to reload the driver and see if that helps but as of now I do not believe that the driver will help.

If this is only a driver problem could someone suggest how I get the driver to actually install :-(

I am now at a loss. I am unsure what to do now. Suggestions?... +please!+

Answer:Satellite Pro L670-18F PSK3FE Webcam stops working become "Unknown Device"


Unknown device means that the driver is not installed.
I think the webcam driver installation should fix this.

Since the face recognition use the webcam too, I recommend uninstalling this tool as well as the old version of webcam software.
Both (or just face recognition) should appear in control panel -> software

Now download the both applications from the driver page.
Start with webcam driver installation:
1) Unzip the webcam driver package

2) The TC30049700N.exe can be unzipped too (right click -> extract here)

3) Now you should see different files exe, dll, and others? try to execute the setup.exe to start the installation. If this does not work, go to device manager, mark the unknown USB device (webcam) and install the driver pointing to the extracted folder containing the webcam driver files. The system should pick up the dll files automatically.

4) Reboot the notebook and follow with face recognition software.

Good luck

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I've had to reinstall a fresh copy of Windows 10 and I cannot find a Windows driver for my C50D-B-120 (ACPI\VEN_SMB&DEV_0001) . I found one for an earlier version of windows but it won't load.


Answer:Satellite C50D-B-120 - Unknown device ACPI\VEN_SMB&DEV_0001 Windows 10

Originally Posted by Len_0onx

I've had to reinstall a fresh copy of Windows 10 and I cannot find a Windows driver for my C50D-B-120 (ACPI\VEN_SMB&DEV_0001) . I found one for an earlier version of windows but it won't load.


Found a solution myself. For every one else you can find the driver here

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I try Windows Seven Ultimate on my P300-1bb, but i have an unknow driver, it is write : Acpi Microsoft (code 28).
I have install all drivers and update bios, but nothing which recognized this drivers.

Where i can find this driver ?


Answer:Satellite P300-1BB: Windows 7 - unknown device Acpi Microsoft code 28


Install the Intel chipset driver.
If you will not find any on the Toshiba driver page then I recommend searching on Intel page directly.

As I?m not mistaken it?s a *Mobile Intel PM45 Express Chipset*


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Relevance 59.45%

I have recently bought a laptop. On Toshiba products page it's listed as Satellite A210-199 (PSAFGE-05M00FG3). If I follow the link to the drivers page, it's listed as Equium A210 (PSAFGE-05M00FG3).

the laptop came with VISTA home premium, which i do not like/want, but functions flawlessly. After full install of WXP Professional SP2, (latest updates, all drivers from Toshiba home page, etc), the hardware device manager lists a "BASE SYSTEM DEVICE" under "system devices", for which it cannot find the drivers (yes, it also automatically searched the internet and that did not help either).

I tried to uninstall the device and reboot, just to see what happens. And I got the standard taskbar baloon with "found new hardware". Windows still did not find any drivers for it, and it still lists as a yellow exclamation mark in the hardware device manager. The only difference is that now it's no longer under "system devices", but instead it is an "unknown device" under "other devices" (you know, the big yellow question mark icon)

After a clean full reinstall, it's still an "unknown device" under "other devices".

EDIT: maybe I should also mention that when I install the graphics and sound drivers, windows says I modified some important system files and I must reinsert the original cd with WXP SP2 kit.

Answer:Satellite A210-Downgrading VISTA to XP Pro SP2 - unknown base system device

Did you install all drivers provided on the Toshiba European driver page?

I mean divers for Card Reader Controller, AMD Processor driver, Modem Driver, Infrared Driver, etc?

Please check all these drivers!!

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Relevance 59.45%


after installing the update SP2 for Win XP on my notebook Toshiba Sat. Pro 6100, the following happens:

when the notebook awakes from the stand-by mode, the USB connector is unknown and the communication is lost.

Who knows the answer for this problem?

Answer:Satellite Pro 6100, WXP installing SP2, after stand-by mode the USB is unknown

Hello Erjee,
you just need to install the bios version 1.90 or later.

For other machines with the same problem after installing SP2...
TE2100 v1.60 or later
SATELLITE PRO 6000 v1.60 or later
PORTEGE 4000 v2.10 or later
TECRA 9000 v1.40 or later

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Relevance 59.04%

I was try to install Windows Server 2008 R2 64 bit on a A505-S6004 (originally Windows 7 Home Premium) on a new disk. Having downloaded and installed numerous Toshiba website drivers for Windows 7 and installing, I have two things left in device manager that I don't know what to get for them.
The info is under Other devices-Base System Device-PCI Bus 3, Device 0, Function1 and ..., Function2.

Any ideas what this may be?

Answer:Satellite A505-S6004 - Unknown device on Windows Server 2008 R2 64bit

It turns out I missed a driver, Ricoh Card Reader for Windows 7: rpn=PSAT6U&modelFilter=A505-S6004&selCategory=3&selFamily=1073768663#

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Relevance 56.58%

I upgraded to Windows 10 a while back. Every time I open the computer I get a pop-up notification telling me the USB device is unrecognized. I have no USB devices in any of my 3 USB ports.
I sent my computer in twice. No help. They just uninstalled everything and reinstalled everything and told me it should be fixed. It is not. I then went about updating every driver in my Device Manager. I uninstalled the Unknown USB Device and then updated
other drivers. Certain drivers (such as PCI Express Root Port #3 - 9C14) when updating would also reinstall the Unknown USB Device, which I would then uninstall and keep working down the list. At the end of updating EVERYTHING I scanned for hardware changes
and "found" the Unknown USB Device. 
From what I can tell, and I know very little about this stuff, my computer can't name one of my USB ports. Since it can't figure out what it's called it can't download the proper driver for it. Since it can't download the proper driver it can't work properly.
The practical result from this is that one of my three USB ports does nothing when I put in any USB item (connect my android phone, thumb drive, presentation clicker, etc).
I've looked on tons of forums. My current thought is that if I can tell my computer what the deice is or download the right driver and tell my computer to use that driver for this device it should solve my issue. But I don't know how to know what the name
of the USB port should be (I imagine it woul... Read more

More replies
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I recently formated my laptop and went to toshiba driver download section.
And downloaded and installed all of the drives except my LAN NIC and WLAN NIC.

I tried download all the driver models but still wont install.
I tried switching the WLAN on and tried again, still no luck.

Here is a pic from what I still need to install.
[picture |]

Thanks in advance

Answer:Re: Problem installing WLAN device for Satellite A100-813


Seems you tried to install the wrong drivers for wrong notebook series.
The Sat A100-813 belongs to the PSAA8E series and the notebook has been equipped with the Intel 3945ABG WLan card and with Intel Pro/100 LAN card.

So both are Intel chips.
Check the Toshiba European driver page again and try to install the drivers again!


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Hi there,

I purchased a U400-17R Model with Vista Home. i Formatted it and installed Windows XP Professional downloading the XP drivers from Toshiba site.

Everything works but my Sound Device is not working. when i check in the Device Manager the Sound Drivers are there and it says working properly.

I am Lost...Can anyone please help?

Answer:Satellite U400-17R - Sound device is not working after installing XP


I think you?ve got the same problem like me some month ago?.
I?ve installed Win XP with SP2?

The sound didn?t work because I didn?t install the necessary MS patches; KB835221 & KB888111

The patches must be installed at first before the sound driver would be installed.
If you have already installed the sound driver then you should remove (uninstall it) before you would install the MS patches.

PS: The MS patches are a part of the SP3

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Relevance 55.76%

IBM ThinkCentre A50 8320-7EG, Windows XP

Just reformatted and reinstalled, lists the ethernet, audio and video as 'unknown devices' (ethernet at least definately worked fine before reformat). All integrated with the motherboard.

Have tried to install drivers from the disk, downloaded from the IBM website and from driver packs but nothing has had any effect, using the wizard it won't recognise any drivers, installing the alleged drivers manually it says they have installed on the installation wizard thing, but nothing's changed with the device in device manager.

I assume somehow I must have the wrong drivers, but not sure how this could be the case, or really what else I can try.

Thanks very much for any help!!


Answer:"Unknown device", installing drivers not working

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Hi folks,

I am getting an error message when I try to install new hardware on my notebook. Windows XP tries to find the drivers and then comes up with the following error after a few minutes. The software starts to install but then comes up with the following:

'There was a problem installing this device:

USB mass storage device
An error occured during the installation of the device
The data is invalid

This has happened with a USB card reader and my mobile. Once I clear the error box i get a message saying the device won't work properly?

Anyone have any ideas at all?


Answer:USB mass storage device installing issue on Satellite M30 PSM30E


What notebook series or notebook model do you have exactly?
Could you please post the whole number? This would be very useful for the further investigation!

Usually the whole Toshiba driver installation must be done in the right order.
In most cases you would find a installation instruction txt file on the Toshiba driver page.
You have to follow this instruction to ensure that all drivers would run correctly.


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Hi All,

I own a Satellite A500-138 - Part Number: PSAM3E-013014H2.
I just finished upgrading the O/S from the horrible vista to Windows 7 Ultimate 64. Upgrade was smooth. Drivers and utilities were easily located on your website and install correctly. Almost all seems to beworking OK...
I'm left with 2 issues:

1. Device manager still shows one "Unknown Device".
Device Details show hardware IDs of ACPI/ENE0200 and *ENE0200
What is it and where can I find its driver?

2. I can't locate the cool LAN/WLAN manager utility that came with vista.

Thanks in advance,


Answer:Satellite A500-138 "Unknown Device" in Windows 7

Hi Ami,

Have you checked the device and vendor ID of the unknown device? You can check this in properties of device.
Maybe it?s the Bluetooth adaptor if your notebook is equipped with such one?

Regarding the WLAN tool, I think you mean ?ConfigFree?. You can download it on the Toshiba website. Maybe the Vista version works also on Windows 7.

Good luck! :)

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Relevance 51.66%

CONFIGFLAG_FAILEDINSTALL  0000040error 28error 31unknown device and unknown driver listed in device manager; only info is seems to be USB driver issue! 

Answer:CONFIGFLAG_FAILEDINSTALL unknown device unknown driver; won'...

Hello os4hwks Please try Installing the following driver and confirm. This is the Chipset driver- Can you even try providing the PID and VID for the unknown device? Please follow the steps below to obtain that info -  Click Start, Control Panel, Administrative Tools.In the right pane, double-click Computer Management.In the left pane, select Device Manager.In the right pane, search for the device you want to find the hardware ID.Right-click on Device and select Properties.In the Device Properties window, click the Details tab.From the Property drop down list, select Hardware IDs. A VID and PID number displays in the format:USB\VID_&PID_\ Hope this helps, for any further queries reply to the post and feel free to join us again  **Click the KUDOS/Thumbs Up button to say Thanks**Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.Thank YouAbhinab_Assists 

5 more replies
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Hi, I am using T410 for a couple of months. its camera was working but it has suddenly stoppped working now. in the Win7 device manager it appears as unknown device and in details: -"Windows has stopped this device because it has reported problems. (Code 43)"I have tried re-installing drivers and rebooting machine etc but no help. Please suggest how to fix this. Also tried reinstaling ehci controller device but no luck. Thanks,manu

Answer:Webcam not working on T410, detected as unknown device in Win7 device manager

hey manugautam000,welcome to the forums, disable to camera from device manager and remove the current driver installed to it.reboot your unit, re-enable the camera. windows should then install its own generic drivers.test your camera with the generic drivers.later on, head to , download the latest camera driver for your unit. set your unit to diagnostic mode via msconfig and then install.

WW Social MediaImportant Note: If you need help, post your question in the forum, and include your system type, model number and OS. Do not post your serial number.Did someone help you today? Press the star on the left to thank them with a Kudo!If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! Follow @LenovoForums on Twitter!Have you checked out the Community Knowledgebase yet?!How to send a private message? --> Check out this article.

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Thinkpad Yoga 20CD-0032USWindows 8.1 as pre-installed In the Check Up tab of Lenovo Solution Center it has an alert saying one or more devices has problems and then it lists an Unknown Device with Status Not installed.  However when you launch Device Manager it doesn't show any unknown devices.


Go to Solution.

Answer:Lenovo Solution Center Shows Unknown Device But Device Manager Doesn't

Welcome to Lenovo Community Forums!
I?m sorry to inform that it is a false indication from Lenovo solution center. Since Windows doesn?t detect any missing device drivers within the device manager, there is no driver that is missing.
If the warning keeps popping up, change the reminder settings to ?never?. Probably, you have to wait for an LSC update in which the bug would be fixed.
Refer here for further information regarding the issue.
Hope it helped!
Best regards,

Did someone help you today? Press the star on the left to thank them with a Kudo!If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.Follow @LenovoForums on Twitter!

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My thinkcentre M57 6072 BH7 (not sure if it is M57 but I just got 6072 BH7 from label on the machine) has windows 2003 serverinstalled. I installed all the drivers from DVD comes with. However, there are 3 remaining devices that cannot be installed: PCI Serial DevicePCI Simple Communications Controller (there is no modem installed)Unknown Device I was trying crazy to download the drivers for AMT and HECI but most of them do not work on WIndows 2003 server. I also tried the newest flash BIOS with no luck. Anyone has any ideas? Thanks in Advanced and I really appreciate any help.

Answer:PCI Serial Device Controller Unknown Device for WIndows 2003 server on 6072 BH7

what are the hardware IDs of each device?   this can be found in each device's properties under the details tab.

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I need help for eliminate error in Device Manager. Error code: 43 in Unknown Device row.
Thanks for help
Link to image
Moderator note: images totalling more than 50k converted to links per forum rules:  Lenovo Community Participation Rules

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Ok, I have a new SL300 and I installed a NEW Hard Drive and installed windows XP Pro CLEAN. I got ALL the drivers up and running with ONE exception. There is an UNKNOWN Device in the device manager and I can't seem to find what it does. Looks like everything works on the system. I also can't seem to get the Intel 5100 software to control my wireless card. If anyone has any ideas it would be very helpful! I ran a utility for unknown devices and that didnt find it either.

Answer:Windows XP Clean Install New Hard Drive UNKNOWN DEVICE IN DEVICE MANAGER! HELP!!!!!

what's the hardware ID of the device?   you can find this in device manager (start > run > devmgmt.exe). have you installed thinkvantage system update to see if it finds the missing device?

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i have this unknown device that need to install the driver on my Y430 any help will be appreciated?  


Go to Solution.

Answer:Y430 - device instance Id : ACPI\CPL0002\3&11583659&0 - unknown device

It may be CIR driver.

//help will save the world

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I can no longer use the mic that came with my Xbox 360 wired controller on my Windows 10 PC after I upgraded to the Creators Update a few days ago. In the Device Manager it is listed as 'Unknown device' and if I try to 'Upgrade Drivers' then I get this error message: "XBOX 360 Headset Device. An error occurred during the installation of the device. The driver installation file for this device is missing a necessary entry. Contact your hardware vendor". Anyone have any idea how I can get it working again? I can't find the driver for this thing anywhere! I used it for Cortana searches as well as communication in Overwatch.

Answer:Creators Update Broke My XBOX 360 Headset Device (Unknown Device)

- have you checked here:
Xbox 360 Wired Headset troubleshooting for Windows 10

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hie i have just installed window 7 and this devices are missing, any help will be very much appreciated.
base system device
device id


LOCATION; PCI bus 0 device 2 function 1
PCI\VEN 8086&DEV_3582&SUBSYS_120E10CF&REV_02
My laptop is FUJITSU-BIBLO MG13D

Answer:base system device, video controller and unknown device missing

Before I can help you, follow these instructions to let me know more about it: New to SevenForums? Fill out your system specs (this tool may help you out a great deal).

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Hi there! I've installed WinXP Pro SP3 (unattend) on a new T400 and i've got some unknown devices.  Screenshot from the device manager SystemUpdate from Lenovo has turned off (Mai 09) an I'havent any idea wich devices I've forgot to install. Do some one have any ideas? Thank you and for any help!Message Edited by fishware on 05-06-2009 11:19 AM


Go to Solution.

Answer:T400: Base System Device, PCI Serial Port and Unknown Device

Sulotuion:PCI Simple Communications Controller: Serial Port: System Device: Unknown device: you for mental help :-)

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Hi Team, Recently I have Updated my Laptop from Windows 8 to Windows 8.1 single language pack. Once Installation is completed, I faced problem in starting Dolby Audio driver, I have installed the latest driver and it got resolved. Next came the problem in Bluetooth device in accepting files from my mobile, then done the same. Installed latest driver and it too got resolved. But still i am facing the message "Unknown device" in Lenovo Support Center in Device Manager. I have checked in Device Manager. But no device is indicated in yellow color. Please let me know, how to identify which device is causing this problem and how to rectify this. My Laptop details:Model : G580Product ID : 20150 Let me know if you want more details. Thanks,Sathish Kumar

Answer:G580 Lenovo Support Center - Device Manager - Unknown device

hi there,can you please submit the device id?
right click the unknow device > properties > details

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I have two of each after formating the pc and installing windows 7 ulthow do i figure out what these are?

Answer:sl500 drivers windows 7 base system device and unknown device

They must be the Ricoh card reader drivers.Have you installed thinkvantage system update?

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Hi, In My lenovo G450- with Intel Chipset - 3GB RAM (no external graphics card),am seeing a Unknown Device with question mark on device Manager, running on Win XP. Further clicking on Device properties tell me that -Device type : Other DevicesManufacturer: UnknownLocation : On Microsoft ACPI- Compliant Embedded Controller. I have installed all the drivers and have not installed any external devices like USB etc.Am not getting which device this could be. Network Controller also shows with question mark even after installing Broadcom Ethernet Driver for XP. Kindly help me what to do?Is there any order where we need to install the drivers.


Go to Solution.

Answer:Unknown Device & Network Controller in the Device Manager for Lenovo G450

re-install power management and ethernet drivers.

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Only bought Yoga 2 Pro for few days and start to have bluetooth issue where intermitten disconnection with my logitech M557 bluetooth mouse and now is totally failed with Unknown USB Device. Tried download and re-install new bluetooth driver from Lenovo Support Site but still shown as Unknown USB Device. Pls help!

Answer:Yoga 2 Pro Bluetooth - Unknown USB Device (Device Descriptor Request Failed)

Same issue,  been a problem since I purchased last Christmas.  Sometimes I want to throw this piece of crap out and buy a mac.  Lenovo, get your head out of your ass.

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I was just working happily when my Microsoft Bluetooth Mouse just suddenly stopped working.
The Bluetooth settings page says "Bluetooth is turned off" and there are no options on the settings page or the system tray to turn Bluetooth on.
The Device Manager now has "Unknown USB device - device descriptor request failed" where it did not before.
Other devices all seem to be working fine - USB devices plugged in are being recognized and work properly. Only BT seems to be broken.
I've tried:
uninstalling the device and rebooting
installing the latest updated chipset drivers from the dell website
windows updates
pretty much all of the advice here: http ://

Any other ideas?

Answer:XPS 15 9550 Bluetooth stopped working (Unknown USB device - device descriptor request failed)

So in desperation I just went into BIOS settings to see if there are any BT settings that may have become disabled. I didn't see any, and I didn't change any other settings.
After rebooting, BT and my mouse is now working again.
Something seems to be really flaky here, but hopefully this will help others with the same issue.

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Hello there,I performed clean Windows 7 installation on my Lenovo ThinkPad Edge E545 laptop, I installed all the drivers and Windows updates, however I still have one unknown device in Windows Device Manager that I can't get to work properly. I do not know what the device is and Windows troubleshoot doesn't help at all. I did some googling and checked your Lenovo support and found out that this might be missing Power Management driver but I have installed it and the issue persits. When I go to device's Details tab it lists two Hardware Ids: 1) ACPI\SMB0001, 2)*SMB0001 (screenshot provided).Unknown deviceI have also tried to install AMD SMBUS driver and many others (Synaptics driver) and in the end I got rid of all unkown devices from the Device Manager except this last one. Could you please advise on which driver I might have missed or what steps need to be taken to solve this issue? Thank you very much in advance,Michal


Go to Solution.

Answer:ThinkPad Edge E545: Unknown device in Device Manager

Okay, issue solved. It turned out to be my bad (as I expected) and I solved it by installing ThinkPad UltraNav Driver.

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Even with all the latest updates installed, I still get this annoying warning from Lenovo Solution Center 'Unknown device' - status 'not installed'  Control Panel / Device Manager gives no signals something is wrong. why?! Details:Computer: Thinkpad Yoga (TPY)OS: Windows 8.1 all updated Lenovo Solution Center version: 2.2002 / revision 17630 External device attached to TPY:  OneLink Pro  (also has latest driver = Realtek 8.10.1009.2013) Thanks in advanceOlof 

Answer:'Unknown device' in Lenovo Solution Center, but not in Device Manager

It seems to me you are missing some update from Lenovo. I had the same issue, however just recently after updating any available software/drivers for the TPY the message has disappeared.

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I have unknown device in device manager

It says unknown device on on Microsoft ACPI-Compliant System

(oh and i also didn't install modem drivers since i don't need the modem anyway)

Answer:Satellie A300-1EC PSAG0E: unknown device in device manager

What OS have you installed?
Windows XP?

If yes, check if your Windows XP is up to date (install MS patches and hotfixes)
Also install all available drivers from the Toshiba driver page like:
Chip Set Utility, Storage Manager, etc? and if there is an newer BIOS version, then update it.

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My 7270 latitude touch screen stopped working shortly after first use (after win update worked again but for a short time).
All drivers are up to date.
In device manager a USB device shows as unknown (yellow warning triangle), otherwise there are no indications to the source of the problem.  There is no other touch screen device showing in device manager. 
How do I perminently solve this?

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How do i figure out what driver or even component windows wants software for when in the device manager under other devices it lists an unknown device and windows update cannot find anything.

Oh and is it appropriate for me to use this topic to ask another question regarding explorer.exe as while i am inside a folder i delete (by choosing delete from the context menu in the tree view) while inside that folder on this particular laptop PC explorer. always crashes, collect information, sends it and restarts explorer. I have not experienced this problem on any other pc running any version of windows 7, oh and the same happened with build 7264 x32 and the current install of build 7600 x64.

Answer:Device Manager reports Unknown Device & explorer crash

Please fill up the System specs...

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I have recently reinstalled windows xp on my laptop and since the reinstall found new hardware wizard keeps popping up saying it has found PCI device, but I cannot find the drivers for it neither will the laptop find the drivers automaticaly.

Any help much apprechiated


Answer:Equium A110-233 (PSAB2E) - Unknown PCI device in device manager


Hav you already checked the vendor and device ID in device manager? Check this please and on this website you can enter these ID?s and then you can see what device it is.

Furthermore the drivers can be downloaded from Toshiba directly: > Support & Downloads > Download Drivers

If you have more questions, please let us know! :)

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I recently put together a new computer, and in the process of of installing the USB 3.0 connector from the front of my GX500 case, I either bent numerous pins on the motherboard USB 3.0 header or the motherboard shipped that way and I inadvertently made matters worse. Anyway, that header on the motherboard is without a doubt unusable.
Since I don't really need the USB 3.0 functionality, I bought a USB 3.0 -> 2.0 adapter cable, connected one end to the connector on the front of the case and the other end into the USB 2.0/1.1 header on the motherboard. Unfortunately, when Windows 7 boots and I plug a device into the front ports of the case, Windows detects the front USB ports as "Unknown Device" within Device Manager yet says the driver is successfully installed. I've already downloaded the most current Intel chipset drivers for my motherboard, deleted and reinstalled all USB drivers, and all rear USB connections are working perfectly fine - it's just the two front ports that are connected from the case to the USB 2.0/1.1 ports via the adapter cable.  I've tried both USB 2.0/1.1 headers on the motherboard, and I've tried plugging in several devices to the front USB ports, and this problem still persists.
I've ensured the connection inside the case is solid, yet I cannot get Windows to recognize the front USB ports.  However, I have confirmed that power is being sent to the front ports because it charges my phone when I connect it to the front USB ports via m... Read more

Answer:Front USB Ports not Working - "Unknown Device" in Device Manager

If your motherboard has a 1x pcie slot you can get a card like this...
Some motherboards it's a tight fit because of the video card taking up space. In that case you can relocate the above card with this...

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I need assistance finding the drivers for my elitebook 8570w.  Hardware ids are attached.  Please help thanks

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