Computer Support Forum

PL2303 (USB/RS232) Driver no longer loads

Question: PL2303 (USB/RS232) Driver no longer loads

After several attempts at trying different driver versions, no drivers seem to load now.

These drivers are for a Prolific PL2303 USB to RS232 converter - although I did not buy the device from that company. The drivers used to install easily and I actually had one that partially worked.

At one point, I went to the Windows/System32 and manually deleted all the files and "packages" for those drivers. This likely screwed everything up and I don't know how to recover. I have the option of doing a full system recovery, but it will take days of work to arrive back at the current configuration.

After several attempts to install and uninstall all these drivers again, nothing seems to work. When I plug in the device, Vista looks for the driver in Windows Update and of course finds none. In Device Manager (DM), the annotation for the Port is Unknown device. When I try to manually install the driver through the DM, it fails. The code is sometimes 1 and other times 19.

System Info says I'm running Vista Home Premiun X86-based PC, but the sticker on the laptop says Athlon 64 X2 dual-core (Acer Aspire 4530).

Any fixes?

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Preferred Solution: PL2303 (USB/RS232) Driver no longer loads

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.)

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My PL2303 (USB/RS232) driver no longer loads.

When I plug in the device, Vista goes to Windows Update for the driver and finds none. In Device Manager (DM), the annotation for the Port is Unknown device. When I try to manually install the driver through the DM, it fails. The code is sometimes 1 and other times 19, or 28), The error message is that some parts of the INF file are invalid.

Until now, several drivers for Vista installed, although one actually worked.

System Info says I'm running Vista Home Premiun X86-based PC, but the sticker on the laptop says Athlon 64 X2 dual-core (Acer Aspire 4530).

Any fixes?

Answer:Driver no longer loads

Check this out:
Cool Drives

24 more replies
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Good morning,

I hope this question isn't redundant, although I did search the forums to no avail.

Good morning,

I am running Windows Vista Home Premium 64 bit. I recently purchased the USB-1 cable from Uniden. Prior to connecting the cable I downloaded and installed the driver, again, from the Uniden site, with no trouble. When I connected the cable I was advised that the device driver software was not installed as "...the name is already in use as either a service name or a service display name."

After spending hours trying to figure this out it occurred to me that I had attempted to install an aged Prolific USB-Serial cable at an earlier time. I downloaded the Vista 64 driver direct from Prolific, and, although the software installed trouble free and the subsequent hardware driver was also installed without trouble, the PC would not recognize the device to which the cable was attached (an Icom PCR-1000).

A little bit of research has led me to believe that the Uniden cable is recognized via a Prolific driver, apparently with the same name!!! After attempting to uninstall and reinstall numerous times, I now have 17 comports!!!!

I am hopeful someone on this list has had a similar experience and can help me either completely delete the prior registry entry (preferred) or teach me how to rename the new driver.

Thanks in advance for any help you might be able to lend.


Answer:Prolific PL2303 driver

Hey John,

Welcome to the forum

Try this;
Guru3D - Driver Sweeper (Setup) download from

I hope this works


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hi. when i first install the usb-serial cable, the drive works for xp and vista. It works in the first installation

today, i unplug the usb-serial cable for some reason and re-plug in it and it said doesn't recognize the driver.

i check hardware manager and i find it's "unknown device".

i try to reinstall the driver in many different ways, but it just doesn't work for my laptop.

i need it to connect to router console.

the only possible way to fix it for me is to format the computer and do the first installation
but that's NOT a technician should do. the cable comes with driver. i also download different one on the web. but it's basically the same. the driver name is "PL2303 USB-Serial Driver"

i also try it in other PC and it's the same(unknown device).

do you have any suggestion?

if i fix can it, i will NEVER unplug it again. >.<

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Hi guys

I purchased a HL USB RS232 (serial to USB adapter) and the drivers that came with it are not being detected by windows 7. Would anyone happen to have a link where i could find a working driver for Windows 7.


Answer:HL USB RS232 driver

have you tried loading the drivers in compat mode ? Compatibility Mode

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I have purchased a usb to serial adapter but the drivers are not functional.

Every time I plug the cable inside my computer i get a USB device not recognized message. Under device management > Universal Serial Bus controllers > Unknown Device.

The drivers that i have is called "PL-2303 Driver Installer". Even after installing this driver, I still have no luck. I know it is possible to update the driver but the driver format would have to be in a .INF file. In this case the driver is a .exe file so i have no idea what to do.

Any help would be really greatly appreciated also the drivers are available @

If the device is functional and installed, it should be under the COM ports in device manager but like i said before it is not and is listed as "Unknown Device".

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Hello Techguy
I have a USB to RS232 converter which came with a driver disk. I can load the driver in and everything seems to load OK. However, when I then plug in the converter, it can not find the driver.

What it seems to be looking for is a driver called "USB2.0-SER!". However, the device seems to be a Prolific chip device and I would have expected to see it looking for something like "PL2303" or similar. I searched the computer for a driver with this name but no luck.

I went to the Prolific website and downloaded their driver but that didn't work any better.

I know these devices work as I have seen them working on other computers. How do I get it going?

Answer:Solved: Driver problem for USB/RS232

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I bought a FlashVoyager 16GBGT in September for use with my XP pro machine and all was fine. I have now upgraded to Windows 7 Pro 32-bit and I can no longer use the flash drive. When I plug it into a port the Autoplay window pops up for a few seconds and then disappears, then reappears, then... and so on. If I catch the Autoplay window in time I can get Windows Explorer to come up but it immediately closes.
I have tried it on an XP machine and everything works perfectly. I have reformatted the flash drive to FAT32 on the XP machine but nothing changes on the Windows 7 machine.
I have tried on the machine's ports and a powered hub.
I do not have access to another Windows 7 machine to test.
I also have a FlashVoyager 4GB which works fine have tried another 4GB drive which also works perfectly. Another 4GB generic flash drive has the same problem.
I found an old HDD and did a clean install of Windows 7. There were no problems with the Flash Voyager GT and its driver! The generic drive also worked perfectly.
As I don't really want to do a full clean install of Windows 7 and all software etc, I did a repair install... BUT this hasn't fixed the problem. What seems to be happening is that the driver for the flash drive is installing, uninstalling, installing and so on. I wanted to try to remove the drivers then reinstall them before I go to a full reinstall of the OS but I don't have the knowledge to know how to do this. Can anyone tell me how to go about this. There seem to be a lo... Read more

Answer:Flash drive driver loads-unloads-loads....

disable autoplay and access flash drive from start>computer.

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I b ought one of these adapters off eBay so I could connect my GPS to my computer via USB, my old cable was the serial port. Anyhow, the seller told me it would work with Vista but she did not tell me it wouldn't work with Vista Premium. When I connect the device it tries to find the drivers but is unable to do so...does anyone know where I can get the right driver? The CD that came with the cable is worthless. Thanks

Answer:USB to RS232 Serial 9Pin DB9 Cable Adapter Driver

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This morning would no longer load for me on my work computer. It was working fine in the morning and stopped somewhere after 10a. Our work uses gmail so I know it wasn't blocked intentionally. It does not seem to load in IE 8 or Firefox 3.5.3. I also just downloaded Google Chrome and it would not load there either.

The weird part is that my co-workers computer is able to load Gmail. I can also access Google and search in Google, but cannot access Gmail.

I've tried re-setting the router. I've done a clear cache, and also a friend suggested I do this through the command prompt which I did.

I also called RCN (our cable service provider) and they had me do a winsock reset via command prompt but that did not fix the problem. They said they couldn't help me trouble shoot any further.

I have AVS Antivirus 8.5.421 installed and didn't see anything being "blocked" under advanced settings.

Can anyone help me fix this? Many thanks in advance... no longer loads in web browsers

Spyware Asylum

Go through this. It sounds like a infection of some kind.

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When I try to load FP 2003 on my xp I get an instant flash of the page and then it disappears. I have tried a repair through the install disk and it says it has repaired but the same thing happens.
My computer is an XP pro with service pack 3.

Thanks for any help.

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I am running: Windows 7 64bit
On: Acer Aspire 5750 laptop

For a couple months my computer has been locking up at random intervals for several seconds each time. I got no error messages and each time it came back acting fine, so I just assumed I had too much running. Now, I'm not so sure it wasn't the HD failing, because...

Last week, I noticed the shield on the shutdown button indicating windows needed to run an update. I closed out of everything and pushed the button to shutdown/install updates. The computer immediately crashed almost as if I had held down the power button. When I attempted to restart it, my only 2 options were to start normally or launch repair mode. Normal didn't work, so I launched repair. Repair ran for close to 4 days. In the first 36 hours it asked to be restarted twice, after that it just kept running until finally I gave up and shut it down with the power button.

Like a moron, I do not have a recent backup of my files and really wish they could still be saved.

Since then:Tried to rescue files with Umbutu boot stick- error said it could not mount to drive.
Tried to launch safe mode with command prompt via F8- system went back into repair mode instead.
Tried to launch to last known good configuration via F8- system went back to repair mode, again.
Tried to launch via Windows Boot Disk- the screen it gave me was not the same screen as the screenshots on the forums suggested I should get. My screen was an Acer logo with 3 option... Read more

Answer:OS no longer loads after Windows Update

Hello Drexi and welcome to Seven Forums.

Sorry to hear about the problems you're having. One of the Forum experts (who also happens to be a Microsoft MVP) prepared a troubleshooting tutorial for failure to boot issues. It's time consuming but has helped many to resolve their boot problems.

Troubleshooting Windows 7 Failure to Boot

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On one comp, when it turns on, it has a black screen, with a bunch of white font, on the other comp, BAM, go straight to the XP loading screen.

What is causing this?

(the only diff, is that on the comp where it goes through the black and white checking screen, the HDD, cdrom, and mobo are all on one cable)

anyone know what is causing this? and what i can do to speed load times up?

Answer:Two identical computers, one loads longer than the other.

Its how they are set up in the bios.
The fast one probably has the quick boot option turned on.
Has the hard drives and cd drive predetermined as opposed to auto-detect.
Etc, etc.

Its normaly "F2" or "Del" to get into the bios.
Best rule of thumb when altering settings.
If your not sure what it does then only alter one setting at a time.
Makes it easier to correct mistakes.



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Answer:Website no longer loads on my computer-help!

Just to clarify, does this have any reference to Windows Server? or is it just an issue with your computer?

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Ok, so here is the situation. I had a problem with my user profile (admin account) wouldnt log off. Thus, I couldnt delete the profile even though I created a new admin account. I had to delete it using admin tools, computer management, forced delete. Now no problems logging off users. I downloaded some patches that were available in Windows update. I dont think it was service pack 2 files, as I dont believe its available yet. I went to launch Call of Duty in single and multiplayer mode, executes initial screen, but Will Not Load! Doom3 same problem! I unistalled Call of Duty and reinstalled it, no dice, same problem. I deleted DirectX in program files and reloaded it. Cannot play any games at all. Cd-rom is not the issue as it plays music and had no problem re-installing Call of Duty. By the way I am using XP. Has anyone experienced this problem before. Everything else on my computer seems to be working. No error messages in Doom3, Call of Duty reports error message stating: WIndows unable to load Call of Duty, send error report. Help Me Please! I'd hate to reformat.... Thanks in advance! Paul

Answer:XP no longer loads/plays games

I'm having a similar problem, except only certain games don't load. And, most of my games run, but when I try to exit them they stop responding. And when I'm playing some games, they randomly crash.

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I used partitioning software called GParted to set up another partition to install Vista. Vista installed fine but now XP no longer loads. I also used a program called EasyBCD to check the bootloader path and this is what it looks like now.

Any suggestions how to get XP to load again?

Answer:XP no longer loads after setting up dual boot

Does anybody know if it's possible to repair the boot with the recovery discs?

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Hi, I've been using W7 for quite a while now and, then 2 days ago it started freezing randomly. It seemed to be just the screen as I could see from my modem that my internet was still active, and when I pressed "Caps Lock" etc the appropriate light changed. I was unable to do anything though, apart from hit "reset". Then, yesterday, W7 decided to suddenly stop working. I can get it to "Windows Starting" but the after that I just get a black screen, with no kind of keyboard activity.
All that I've done recently is uninstall the MS audio driver and try to replace it with latest Realtek (R214) drivers, and also connect the 2 x USB 2.0 ports from my case to my motherboard (I've never connected them up before as I've never needed them). By the way I'm currently, and reluctantly, back on XP and all seems to be running okay - audio and case USB 2.0 ports included.
I tried all the StartUp options that I could see: "Safe Mode" "Repair" etc but I always get the same result - black screen with no option but a hard reset.
After checking the "ntbtlog.txt" file created I noticed a large number of items "Did Not Load..."

Apart from having no audio, I had no real problems with W7 prior to this. If it can be helped I'd rather fix W7 than install it again, purely because I don't want to lose all my apps/progs and settings.

If anyone could help explain why this may have happened or, even better, help rectify the proble... Read more

Answer:64bit build 6801 - no longer loads

Why don't you get the latest 7000 Build while you still can?
Welcome to Windows 7

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Had Issues for a while with being directed to random sites while using google and random pop ups,

Had the Yellow shield pop up in the task bar telling me i had to restart the system, after restart the Colour of the font in Firefox had changed to black and was running slow and freezing, 3-4 minutes in and the system would freeze only relief being the restart button.

3/4 restarts down the line im here , after the Windows XP loading screen goes off the screen just stays black no welcome page

EDIT EXTRA: It seems the wpa.dbl fil was modified at the time of the attack

Hijack This Log:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 23:40:42, on 15/07/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP3 (6.00.2900.5512)
Boot mode: Safe mode with network support
Running processes:
C:\Program Files\Internet Explorer\Iexplore.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.micros... Read more

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I am running Windows Viasta Home Basic and up until a week ago a jpeg was visible as mu desktop background and then all of a sudden it was got - replaced with black.  No matter how many times I "Personalize" the desktop and request any picture even pre-loaded sample jpegs...... nothing but black.  I am however able to change the themed color to anything I like!!!!! 
Please let me know how to repair this frustrating development!!

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I've never had any problem playing DVDs; when I put in a DVD, it automatically brought up Cyberlink Power DVD 12 and played the movie. Now, the program doesn't load and nothing happens. Any suggestions?

Answer:Cyberlink power dvd no longer loads or plays dvds

NPSretiree wrote:I've never had any problem playing DVDs; when I put in a DVD, it automatically brought up Cyberlink Power DVD 12 and played the movie. Now, the program doesn't load and nothing happens. Any suggestions?When is the last time youve updated the HP assistant, Windows update, Bios update?If not I highly suggest to update the Bios update first Then update your cyberlink power dvd Go to then type the product number to the search bar  Click Software and Drivers  Then Click Go  Select the current version of windows you are using  Then look for the drivers you seek that you believe missing.  Good luck!

"Education costs money; so does Ignorance"If my post has helped you, click the Kudos Thumbs up!If it solved your issue, Click the "Accept as Solution" button so others can benefit from the question you asked!

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I got a notification that microsoft office starter was ready to install some updates. So i closed microsoft office and let it install the updates, but was informed that there had been an error and i should try to repair the installation.I go to control panel->office starter 2010, right click, change, and select to repair. Done.But i still cant load microsoft office starter. It just hangs forever on the "Starting microsoft office click to run..." splash screen.Any ideas on how to get microsoft office starter to run now?

Answer:The microsoft office starter on my Y460P no longer loads

Do Ctrl-Alt-Delete, start task manager, and kill the process CVH.exe. Let me know if this works / it's not there.

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Hi all using mcafee personal firewall free download from aol ,use to load automatically as default on bootup ,for some obsure reason stopped loading ,i have to inatilize the firewall maually ,any body any idea how i can reinstate this please ?-regards hol pol...

Answer:Mcafee Personal Firewall no longer loads at start

You could try uninstalling then reinstalling.

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I have several animated wallpapers from Planesoft and I have icons pinned to my taskbar, but now my wallpapers quit loading al; of a sudden.

Answer:Windows 8 animated wallpaper from 3Planesoft no longer loads

Run msconfig from the run box (start run). Go to the startup tab & see if they are checked.How do you know when a politician is lying? His mouth is moving.

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Hey guy, I am having a bit of a problem with my PC. I recently installed a new hard drive on my system. I am using it as a storage drive. Everything works great except that Windows takes about 2-3 minutes longer to load. What do I need to do in order to make it load faster?

My system specs are as follows.


Any help would be great.

Answer:Installed new hard drive and now OS loads longer than usal

At what point is the computer taking longer? Have you run BootVIS to pinpoint what's going on during the slowdown?

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OS: Windows 10 Pro v.1607
Suddenly fails to load in Edge; a few pins appear but then the page freezes. This same Pinterest account works fine in IE on this same computer and also loads fine in Edge on other computers. Here is what I've tried without success:

1. Clear browser cache and cookies
2. Delete all files in Edge recovery folder
3. Sign in with another Pinterest user account
4. Sign in with local account instead of Microsoft Account
5. Removed saved password for Pinterest
6. Reboot computer

Edge performs perfectly with all other sites. This issue is apparently limited to this one site in this one browser on this one computer. Pinterest support suggested we use IE Of course, but I like to figure out what causes these things to happen. It may be irrelevant but this issue was first observed following a batch of Windows updates on 12/13/16. The only one that looked like a remote possibility was KB3206632, but that was a significant cumulative update that I really do not want to uninstall. Furthermore, that same update was applied to another computer which does not exhibit this issue. I'm out of ideas. Thanks in advance for any suggestions.


Answer:One site (Pinterest) no longer loads in Edge but it will load in IE11.

jhcarver said:

Suddenly fails to load in Edge; a few pins appear but then the page freezes. This same Pinterest account works fine in IE on this same computer and also loads fine in Edge on other computers. Here is what I've tried without success...

You've tried all the obvious things I would have suggested, but there is one more you could have a look at, the 'Use Microsoft Compatibility List' setting. This is hidden on a 'Developer settings' page which you get to by typing about:flags in Edge's address bar. Are the 'working' Edge PCs also on 1607? If so, compare this settings page on the Edge that doesn't work with the settings for one that does and see if they are different. If only the 'non-working' Edge is on 1607, then try turning 'Use Microsoft Compatibility List' on or off and see if it makes a difference.

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I'm not sure this is the right place for this.

I had the Vista Beta (I don't remember if it was 1 or 2). I then set my pc to boot into XP by default as I didn't like Vista.

Everything was fine until yesterday. Now when I boot into XP Explorer and about 2/3 of my services don't load. I can start them manually just fine, but they no longer auto run.

Any ideas? Or is this a reload?

Answer:XP Pro No Longer Loads Explorer After Vista Beta Dual Boot

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a few days ago i was plugging my pc and monitor in. as i was plugging in the monitor the ground wire for the cord to my power supply got to close to one of the positive and negative terminals on the monitor cord as i was plugging it in, there was a huge shower of sparks and a shock ran up the ground wire and into my power supply. I would like to know what parts may of been damaged and what i would need to do to fix the problem. The computer turns on but nothing shows up, for a few seconds when it first starts up everything sounds normal, the cpu makes a little clicking noise like it always does when its functioning but a few seconds after boot up nothing at all happens. the screen is just blank, i know its still sending some kind of signal to the monitor otherwise it would just say,"No Input Signal" and then go into stand by.

Answer:Shock ran up ground wire and into power supply, computers no longer loads up!


the PSU is most definately stuffed, just pray the board hasnt taken a battering as well, the fact that the monitor isnt saying no input is normal when plugged into the PC even with the power off, it says no signal when you unplug it from the PC only, and is not a sign that the board is ok.

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This is sort of a bug report. A Lenovo X131e with Windows 7 x64 and the PL2303 driver including 1.6, 1.61 and 1.7 will not successfully install the driver - Windows always reports "Driver Install Failed" on plug in to USB 3 or USB2 ports. However, putting a USB2.0 hub inbetween the USB to Serial Adapter and either USB port type makes the adapter work fine. This was not the case with the X130e. I'm not sure where to report this beyond this posting, but more of an FYI.

Answer:Lenovo X131e doesn't work with Prolific PL2303 based USB to Serial Adapter and Windows 7 x64

If the USB can be used for other equipment,That may be compatibility issues for USB and Prolific PL2303.Don't plug Serial Adapter when installing the driver,Ofter installation, Connect serial adapter to see whether it is working normally.

------------------------------------------------------------------------------------------------------------I am a volunteer, don't work for Lenovo. I am a software engineer.thinkpad x61t, os:win7 Awavo Software com port monitor serial port monitor

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Hi allDoes anyone know how to cure this problem. Every other time I start my laptop the sound driver doesn't load. if I do a reboot then it loads fine. It alternates like this consistently and is a bit of a pain having to reboot each time it doesn't load.Thanks in advance.

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Ineed a driver down load for a LG CD Re-Writercan any one please tell me where to look Dego

Answer:Advice needed on driver down loads

Optical drives do not need drivers - Windows has the required drivers included.Tell us what problem you want to solve, and someone may be able to help

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HP Pavilion, Windows XP. Overnight, my keyboard stopped working. I keep going into the device manager (via mouse, which works) and uninstalling, then scanning for hardware changes. Software loads, but code 41 error (the driver is loaded, but the pc can't find the keyboard.) Tried updating via my links, since mouse works, but even installing new software drivers doesn't make keyboard work. I've tried on Ps/2 port and on USB. I've tried several keyboards, both wired and wireless. I've even flashed the BIOS.

I need to do my taxes! HELP ME, please, if you can!

I've done the microsoft and HP troubleshooters.

Is my motherboard dying? Everything else works perfectly! And I've checked every connection I know how to check.

Thanks for reading this tome.

Answer:Unrecognized keyboard, driver loads

What model of HP an what did HP recommend?

Look here
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E96B-E325-11CE-BFC1-08002BE10318}
in right pane double click on upperfilters (data->Kbdclass) and in the value data it should contain kbdclass only

7 more replies
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Hi,I just moved my PC a few hours ago, and am getting a BSOD after Windows loads - during the initial loading of applications, etc.Here is the error code I get:0x0000008E(0xC0000005,0x806354DF,0xB845F988,0x00000000)Any ideas? I'm currently running memtest.Thanks for the help in advance & God Bless-Suraj

Answer:BSOD right after Windows loads [Possible driver problem]

Quote0x0000008E: KERNEL_MODE_EXCEPTION_NOT_HANDLED(Click to consult the online MSDN article.)A kernel mode program generated an exception which the error handler didn?t catch. These are nearly always hardware compatibility issues (which sometimes means a driver issueSince you recently moved the PC i would suggest powering down and unplugging all power sources.Then remove a side panel and carefully check all cable connections.Then re-seat both the RAM modules and any add on cards such as sound and video.Leave the cover off for know and re-connect power and re-boot....

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This is weird. My keyboard works fine during boot - {esc} at BIOS display, {enter} at OS select menu, {del} to load BIOS menu, and it works fine in BIOS setup, but once the splash screen loads, the keyboard no longer functions (but the mouse always works). The keyboard itself isn't the problem - it works on a sister machine, and I have swapped in another PS2 unit and a wireless USB model with the same results. I first saw the problem in Safe Mode. Since I can't enter my password, I can't get in to Device Manager. Anyone seen this before or have any guesses?

Home built 2/2007. ASUS P5W DH Deluxe mobo, AMI BIOS ver 2406, Windows XP SP2 build 2600, Core2 Duo E6600 @ stock speed, 2gb Corsair RAM, 2-320gb SATA2 as RAID 0, Gateway PS2 SK9920, Logitech Y-RAJ56A Wireless Pro and Gateway 2195DDX PS2 keyboards.

Answer:Keyboard Driver Quits when Windows loads...?

Can you get it to work safe mode?
I doubt Device Manager would tell you anything, but I am also wondering if a reset of bios defaults might fix this.

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Hi everyone,
When I load Windows Vista normally, when it first gets into Vista it just hangs there and keeps "loading". So much for the fact that I cannot even get into anything because it's lagging so bad.

I'm not a pro like the rest of you but I do know my general way around a computer. So having said that, when I loaded Windows in Safe Mode with Networking, everything works fine and is smooth.

Thanks to assistance from TimW in the malware forum, we determined that this was not a virus / spyware issue, but a software issue.

I am trying to assist in fixing this computer for the family. I believe what happened is someone downloaded a program and because it took so long to install that the user "cancelled" the install by clicking on the cancel button while it was installing. I believe this is where the issue lies, as I think it may have corrupted the registry / drivers. Unfortunately, I'm not a pro in that area.

When I run msconfig and choose "selective startup" and click on the services tab, if I disable them all then restart windows normally. I can get into Windows no problems. The only exception is that I can't use sound, internet, etc making it pretty much useless to the family. Also, all of the startup items are disabled.

Basically I'm at a loss of what to do next. It doesn't seem to me like an earth shattering issue, but to you pros this may be an easy fix. (Here's to hoping)

Any assist... Read more

Answer:Suspected Registry / Driver Issue - Vista forever loads

Since you disabled all startup options, try enabling one at a time until you find the one that makes the system hang. Tedious, but the best way to diagnose that issue.

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Thinkcentre M800- Geforce 210 HDMI (no post display,display returns when OS loads ddriver)- Geforce 210 DVI (post OK, OS display OK) - GeForce GTX 750Ti middle HDMI (post OK, OS display OK)- GeForce GTX 750Ti first HDMI/DP (no post display, OS display OK) That is mad! If I use these cards in any other machine (ie M73), I get post display from ANY output! Already on latest BIOS fwjy79usa Seb

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So loads extremely slow on my home network. It loads on my laptop with any other network and works great on my phone as long as I'm not connected to my wifi. Changing browsers or resetting my wifi has not helped. Something on my home network is the issue. What should I look for? Thanks

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Question: USB - RS232

On my old pc i used a belkin ups with their bulldog software. The ups connected to the pc via a serial cable and all worked very well.So I buys a new pc and realise that it doesn't have a serial port. So I get a USB- RS232 cable (serial connector one end to connect to the ups and a USB conector the other end).I installed the drivers from the disk that came wit the usb/serail cable but the ups is not detected. Interestingly if I go into device manager, after installing the driver, and expand the tree so that i can see the driver one minute its there the next the device manager tree closes then opens and the driver disappears then it re-appears!My operating system is win xp home sp2.

Answer:USB - RS232

TomGI've used usb-serial converters, not all with the same degree of success. In most cases however, a reboot seemed to cure most ails, and sometimes only with the usb converter connected before boot up. Not a lot offer, but might be worth a try if you haven't already...

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Question: Rs232

I am planning on building a small form factor PC but it will need RS232. I don't know for sure if there will be room for an add on card for the RS232. Is there a usb to RS232? If so, will it work as good as an add on card?


Usb to RS232 adapters/cables are common (on Ebay) and I assume they work well but I have never used one myself.

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Question: RS232 on TV

RS232 on TV and Freeview Sat box. What is this serial port for?

Answer:RS232 on TV

Dunno about the TV. But my Humax Freeview STB has serial connection which can be used for uploading firmware upgrades from PC (after first downloading from Internet). Although the upgrades are available over the air, they are available sooner off the Internet.For this to work, one requires (for my box) what is known as a Null Modem Cable (and, of course, a serial connection on your PC). Cables avaialble on ebay, maplin etc.If you haven't got a serial connection on your PC, you can get a USB to serial adapter.It should all be described in your manual.Maybe the TV can take firmware upgrades in a similar way.

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My computer keeps loading with yellow lines all over the screen. Sometimes it wont load at all. Its been doing this every since i bought mc afee anti virus download wont even let me reconfigure Help!

Answer:Computer when it loads loads with yellow lines all over.

It's probably just a coincidence that the problem started after McAfee. Why did you buy it in the 1st place? Microsoft Security Essentials is free as are several other AV programs. Try reinstalling your graphics drivers, if that doesn't help, try uninstalling McAfee. You can always reinstall it again.

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Question: RS232 port

I have just bought new software for my laptop, it's for diagnostics on cars. The software has been configured to use a rs232 (db9) socket on the laptop to conect to the OBD2 on the car, the only thing i have on my laptop is USB's and the 25pin printer port. Is there a way around this?many thanks.

Answer:RS232 port

USB to Serial Port connector?

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Question: RS232 connection

Not strictly a computing query but I just got a new LCD TV and it has an RS232 connection and so does my sky box. Can anyone tell me anything about it.

Answer:RS232 connection

It's generally used by factories and engineers for setting and controlling the user interface modules (menus) you see and use on the tv.

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Question: wireless rs232

HelloDoes anyone know if it is possible to transfer data wirelessly via a rs232 connector on a Win95 laptop to another Pc with either Win95 through to Xp?Thank You!

Answer:wireless rs232

click here

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Hello,I've got a plotter (well, it's a vinyl cutter), which is serial and according to the manual the pin-outs are as follow.It looks to be as if they put '1' for RTS when really they meant '7'. However, that aside, is this a standard straight through cable because TX/RX are not crossed but I thought if it were straight through then 4/6 and 7/8 wouldn't be linked?I'd rather just buy a cable, but this layout is confusing me Thanks for any help in letting me know about this layout.

Answer:Help with 9 pin RS232 pins.

Early serial connector layouts  were defined by the computer maker.  If that was they way they did it, that was the way it worked. Standard layouts became standard later.The layout you show in the picture is not exceptional at all.Here is another almost the same. with photos like this one:

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Question: RS232 data

Anyone know what software is best to use to enable me to view the data coming into my RS232 port from external scientific equipment? an anemometer!....I need to view the raw data to check why I do not get the correct readings from the equipment and been told I should do a port scan...bit too techy for me!

Answer:RS232 data

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i bought a cheap usb to rs232 cable of ebay for £2 with a driver disc.

When i connect usb to port the wizard takes over and asks to install disc but then it will not install .
Have downloaded different drivers but it still wont work,drivers are on desktop i think
thought cable was not working so ordered another but same problem.
Am i doing something wrong?

Answer:usb to rs232 problem?

Some manufacturers of converters like this require you to install the driver software before connecting the converter to the computer. I would suggest going into device manager and uninstalling the converter, restart the computer. Hopefully on the driver disk there is a "setup" or "install" utility that can be executed, run this install and after it is done connect the converter to the USB port on the computer and let the New Hardware Wizard do its thing. If this doesn't fix the problem try a different vendors converter.

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Question: Wireless RS232

I need to extend a fiber optic connection one-half mile LOS. The fiber carries RS-232 data. Can anyone recommend a hardware solution?

Answer:Wireless RS232

While I haven't used them myself, this might help:

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Hi allI am thinking of buying a new lap-top (nothing fancy) but I note that none seem to have an RS232 port any more.I MUST have RS232 because one use of the laptop would be in communicating with all sorts of strange devices that use RS232 (using all sorts of software).I know that USB to RS232 converters exist BUT now to the question:One piece of software I use is Hyperterminal and it "looks" for ports (eg RS232), but as far as I can tell, doesn't see USB (my son's laptop only has USB, and Hyperterminal only comes up with TCP, modem and COM4 (IIRC) which is the infra-red port). And all the other software (i.e. other than Hyperterminal) just seems to find COM1 and then works.Thus, does anyone know how all these RS232 bits of software could find the "port" via USB? Would the USB to RS232 converter cable have software that turns USB into COM1?Has anyone used stuff like Hyperterminal via USB?Thanks for any help.Skeletal

Answer:RS232 on new laptops

Is it a Basic Com port

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Question: RS232 problem

This is for the really old hands...

Got this Seiko labelprinter on Com4 (hispeed pci serial card).
My mobo is Asus P5Q3 wifi-ap deluxe.
I am always on a hell of a ride before I get this to work, these are the options shown in device mgr.:
bps 9600...115200 (several tried)
databits 8
parity none
stop bits 1
flow control none/hardware/xon-xoff (think hardware was the control of choice when it at at last worked for prior W7 installs: Beta, RC, W7)
Com 4

Msg "printer communication error".
Only possible setting on the printer is the com port.

Now I can try for days changing this and that and maybe as before it starts to work "just like that", but it is annoying: I had a crash and reinstalled W7 Ultimate.

W7 gives me a choice of two universal drivers, V8 and V10, tried to change to V8 but that doesn't change anything.


Answer:RS232 problem

Normally you don't need to change settings on the port itself. I would look towards a driver issue here (check for drivers for the printer itself that are comparable with W7)

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Question: RS232 vs. Parallel

While working on a larger problem I found I was not quite sure of the port and cableling names. Is DB-25 RS232 the same as a Parallel port? Also, What is RS422 and RS485.

I know that DB-9 is RS232 and a serial port, so I assume that DB-25 RS232 is simiar to a serial port but I think I may be getting it mixed up with a standard Parallel port as well.

I had found one site but it was too technical for what I need to know. I just want to know an example of it's purpose and what type of connecter they use.

If someone could straighten me out on all this it would help me a lot.

[in case your wondering about the larger involves Punch Press machines, controls, and a BTR board. It seems most BTR's use a serial (DB9 RS232 connection) but ours uses what I am calling the parallel port]

Answer:RS232 vs. Parallel

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Question: rs232 transmission

I am trying to connect windows xp com 1 to a wire edm machine rs232 port
machine receives in msdos. tried using hyper terminal. Program shows it sends but it is not received by the wire machine.

Answer:rs232 transmission

Hi, You might want to check and see if the machine receiving the data and the computer is set the same. (Data Bits,Parity, Protocol, Speed, Stop Bits, and Handshaking) They have to match on both or it will not work.
What DNC software are you using and what control is on the machine?
I might be able to help you better if I know that.

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Question: RS232 Question

I am planning on building a small form factor PC but it will need RS232. I don't know for sure if there will be room for an add on card for the RS232. Is there a usb to RS232? If so, will it work as good as an add on card?

Answer:RS232 Question

Check out this link: TRENDnet USB to RS-232 . I do not personally own one, but I have used them at my job and they seem to work pretty well. You may have a driver issue, depending on the OS you will be using, but for the most part it works.

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How do I determine if the USB port is actually getting data to/from the system's COM port?

Some info:
- I have Vista Home Premium
- I purchased a Generic USB to RS232 adapter (from China) based on a PL2303 chip.
- The driver that came with the adapter seems to have installed properly.
- I have RealTerm installed.
- I jumpered Tx to Rx plus other pins on the male DB9 connector.
- I sought help from Prolific (re PL2303), but found nothing helpful.

But I don't know how to look for data passing through the adapter. What I type on the keyboard does not show up on the RealTerm screen.
I've worked with RS232 for years, and know about the signal-type on the USB port.
But now I am stumped, and about to cut the vinyl covers of the adapter.

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Question: rs232 transmission

I am trying to connect windows xp com 1 to a wire edm machine rs232 port
machine receives in msdos. tried using hyper terminal. Program shows it sends but it is not received by the wire machine.

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Question: No RS232 support

First, I appologize for this being so long-----I have a laptop I was given to use at work that is dual booted into Windows 98 and XP Professional. The Windows 98 is being used for the DOS architecture only. It is not a full operating system setup. I use this DOS for operating a data acquisition machine. However, this new laptop does not have an RS232 port for the DB9 adapter cable that is on the data machine. What I am trying to do is to use a USB conversion cable as this laptop has many USB ports. I know I need a USB driver for this to work. I went to the adapter's webpage and downloaded the driver for Win98 (as there is no driver support for DOS). Here is my dilemna: being that Win98 is not a full operating system, the driver will not load. Is there some way I can manually place the driver in config.sys and autoexec.bat in the DOS architecture. I have tried many configurations that did not work. Unfortunately this data system has to run in DOS only.

Answer:No RS232 support

No.It would have to be a driver written specifically for DOS to work properly.

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Question: Pavilion 550 RS232

Hi, I would like to buy a HP Pavilion 550-209nl Desktop, but I have a couple of issues:Is it possible to add a RS232 connection on it? I need it to connect some instruments at work.Is it possible to use with two screens? Cheers Ale

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I am trying to make an application with C++Builder which communicates with a PIC16F877A which has a RS232 interface. Unfortunately my computer only has USB ports so I have bought a USB to RS232 converter cable.
Well I am a complete beginner to C++ Builder so really at this point I don't even know it will be possible to do this... Any help and advice would be really appreciated. ies

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My computer specs are as follows.....

Microsoft Windows Vista Home Premium SP1 operating system
AMD Phenom 8400, 64-bit triple core processor

Each core operates at 2.1 GHz
2 MB L3 cache
3600 MHz system bus
AMD 780G chipset with hybrid graphics
2048 MB DDR2, 667 MHz, (PC2-5300) dual channel memory (two 1024 MB modules)
320 GB, 7200 RPM, SATA II hard drive
18X DVD ±RW, super multi-format dual layer drive with LabelFlash™
15-in-1 high speed digital media manager with Smart Copy button and integrated IR receiver
Docking bay for optional Gateway 2.5-inch removable USB hard drive
Integrated 10/100/1000 Mbps Ethernet LAN
56K ITU V.92 ready fax/modem
Integrated ATI® Radeon™ HD 3200 graphics
Analog/digital TV tuner card with 3-D combination
Elite multimedia keyboard
USB optical 2-button wheel mouse
Amplified, USB powered stereo speakers

The CD-ROm drive is a Optiarc AD-7203A.

I automatically downloaded a service pack or something or that sort for Windows Vista using the automatic Windows Update. After the computer reboot itself my CD-ROM drive no longer works. I went into the device manager and I got this message "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)" I have used the "check for solutions" button, I have tried to update the drivers, etc. and NOTHING has worked. Someone, please help!

Answer:CD-ROM driver no longer working!!!!

No drivers are needed. Please don't try to install any.

1. Click on "Start" button, the click on "Run".

2. Enter "regedit.exe" and press "Enter".

3. When regedit starts, open up the following key:
{4d36e965-e325 -11ce-bfc1-08002be10318}.

4. After clicking on {4d36e965-e325 -11ce-bfc1-08002be10318} you should see two settings on the right-hand side:
Click on each of them, press "Delete" key and click "Yes".

Or you can download this reg file to do the same thing.

Use CDGone Variant if the other didn't work or you once had Roxio, but use the other one first.

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Question: RS232 line drivers

Anyone had any experiance with these?I want to send (only) from a PC to some machines about 50 yards away. I need to do it using only one line driver at the PC. I have looked at the Patton website (model 1000) but it is not clear if I can use just one, for sending only, or MUST these things work only as pairs?

Answer:RS232 line drivers

click here for detailed information on the RS232.

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I have an old trusty 2000VA UPS that has an RS232 communications port and I wonder if there's some way I can get Windows 7 64-bit to see the UPS via a USB converter cable. This UPS does not come with any Windows 7 driver or management software, Is buying a new UPS the only way forward if i want to protect my ASUS Republic of Gamers Core i7-3770K @ 4.6GHz machine?

Answer:UPS USB-to-RS232 Converter and Windows 7

The UPS doesn't have to be connected to the PC via USB or serial to protect it so you can use it as is.

Buy it will likely work for management with a USB to Serial adapter, Windows 7 has built in support for many APC UPS's out of the box. You may also find newer APC software for your model on the APX website.

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Hi, Ive purchased a USB To Rs232 cable to run on my laptop running Vista Premium 32 bit, but for some reason I cant find the correct drivers for it,the ones ive found are only for XP thats if there is one? if anybody has done this could you please let me know how it's done. Thanks

Answer:USB TO RS232 vista drivers

Make, model of lapy and the cable?

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I have the problem that my RS232 work not 100%under MS/DOS. In Windows XP the RS232 works fine.What can i do ?

[email protected]

Answer:Tecra Series S2 and RS232 under MS/DOS


I think you need an adequate DOS driver for the RS232 port!

At you can ceck which hardware your Tecra S2 have an search a driver for it at the web!


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I need your help to find an USB adapter to connect to and Old Laptop that only have RS232 port.

I want to connect USB divices to the RS232 based Laptop

Thanks for your Help

Humberto Medina

Answer:Old Laptop with RS232 needs USB ports

pcmcia card to usb is ok

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Hi, I need RS232 pinout of HP RP2 Retail System  2030 . How can i found it ? { RJ-50 Serial Ports (Power Configurable 5V/12V) } Could you please help me ? Best Regards, N A

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Question: RS232 serial port

Does the HP Probook 650 G1 Notebook PC come with a built in RS232 serial port. If not is it an option. If it is not avaiable is there a model with the RS232 port built in or available with an option.

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Question: RS232 on M72e Tiny

Hello to All, On specifications M72e Tiny (MT - M 3267 - 5B1) it is said that on the motherboard there is a COM (RS232) port.If this is just how to activate and what is the connection of the latter? Thank you in advance for your answers.Cordially.

Answer:RS232 on M72e Tiny

Hello,Person for an answer?This becomes very urgent for our production.Thank you in advance.Cordially.

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I would like to reprogram a EEPROM, however it seems that my Serial Port does not provide power when I enter Windows XP. Under Linux, the JDM PIC programmer's LED lights up, however I need to use Ponyprog in Windows. I see there is power to the programmer just until I enter Windows. Any ideas? Thanks

T61p T7500, Quadro FX 570M, 4GB, 60GB Patriot Pyro, XP ProX61t Tablet, L7300 Centrino vPro, Windows 7 Home 64-bittpfancontrol installed on all systems

Answer:RS232 in Windows XP with PIC programmer

Hello mate, Try to see in the device manager if windows does not turn off the port to save energy.It's the only option I see for the moment. I try to look further if it's not the problem.

__________________________________________________________________________________Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information on it.ThinkPad T510 4313-CTO Windows 8 x64 - Intel Core i7-620M - NVIDIA NVS 3100M - 8GB RAM - 240GB SSD- Intel Centrino Ultimate-N 6300 - Gobi 2000.ThinkPad Helix 3697-CTO Windows 8.1 x64 - Intel Core i7-3667U - Intel HD Graphics 4000 - 8GB RAM- 256GB SSD - Intel Centrino Advanced-N 6205 - Ericsson C5621gw

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My new laptop doesn't have a Serial RS232 connection but I use one occassionally to download data to a Satellite Receiver.I've bought a RS232 to USB cable which was supplied without a driver. I've tried installing using XP's integrated drivers without success. Can anyone suggest where a suitable driver might be sourced? I've tried click here

Answer:USB to RS232 Serial cable

Possible source:click here(Drivers link, hopefully may work!)

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Does anybody know if a RS232 port is the same as a serial port?

Answer:RS232 the same as serial port?

Well, I think so. Just do some google image search on "Serial port" and see if that's you mean.

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I have used X10 successfully for many years and controlled my whole house via a CM11A controller. This controller connected to my PC through a serial port and could be easily programmed to change lights etc. Since the old PC died and I have bought a new one there is no serial socket on it. I got a cable adapter recently and installed the driver. After some jigging to get the device to be on COM2 (CM11A only allows 1 - 4) I still can't program the CM11A. The Activehome software fails its communication test to COM2. I downloaded a serial port monitor and it looks like bits are sending. Now I'm stuck! Any ideas out there?

Answer:USB to RS232 cable problems

Look in Properties for COM2 and check the baud rate, parity, number of bits, etc is configured properly. The manual I found says 4800 baud, no parity, 8 data bits, 1 stop bit.

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I bought a hand held scanner which had a female 9 pin connector. My laptop only had a 15 pin rs232 connector. As I had spare usb ports I got a USB cable that had a male 9 pin attachment at one end. I also downloaded some drivers for HL-340. When the cable is attached it shows up as com4 usb-serial ch340 usb2.0-ser!. When I run the software associated with the scanner, a light on it flashes, but nothing else happens.Does anyone have any idea if I am using the combination of cables etc?

Answer:Rs232 to USB cable problem

If the port on the Laptop is an RS232 Serial port, are you sure it isn't 25-pin male? You should be able to get a 25-pin female to 9-pin male RS232 Serial Cable to connect the laptop and scanner directly. Have a look at this page click here

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Is there anyway to control Media Center via RS232?


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So at one moment my printer was working, the next it wont print and it says that my driver no longer is recognized.  I have had a bit of strange issues with the printer set up in the past where it wont recognize my computer is on, but I have manually put in the IP address and it works again. So what I have done now:Tried to unistall the software and reinstall. Nothing, same message.Tried to find updated HP software,didnt work.I spent almost three days working with HP and they tried the same options, including using a generic driver and it still did not work.They said it must be my computer and Windows 10 was not fully installed but it has been fine for a year. So I have no idea what to do?I have a Lenovo YogaHP EnvyWindows 10I work from home and I can not print. I can do it from other devices however but that aint real helpful.

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I can no longer see driver information for my XPS 15 9550 accessing by my service tag. I have to use a generic XPS 15 9550 page to get it. What is going on?
Also, this CAPTCHA confirmation is becoming a real pain. It can be impossible at times to determine what pictures apply to what they ask. I tried twice to get this posted after going through several image sets. Can there be a simpler way of doing this? It is getting out of hand.

Answer:No Longer see Driver Data for my Service Tag

Send me the service tag number via private message so I can try to replicate the issue. Unfortunately, CAPTCHA is the software we are using now. Hopefully in the future, this will change.

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sorry - the DVD brand in my previous post was censored....The DVD of my T410 has stopped working, and Device Manager now shows the yellow triangle next to its icon("Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)).I have tried uninstalling it and scanning for hardware changes, which tried to reinstall the driver, but reinstallation failed. Also tried ejecting and reinserting the drive, again with no results. Any idea? The DVD drive was  working fine until recently.

Answer:DVD-RAM UJ892 driver no longer working

sorry - the DVD brand in my previous post was censored....The DVD of my T410 has stopped working, and Device Manager now shows the yellow triangle next to its icon("Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)).I have tried uninstalling it and scanning for hardware changes, which tried to reinstall the driver, but reinstallation failed. Also tried ejecting and reinserting the drive, again with no results. Any idea? The DVD drive was  working fine until recently.

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I can't get my usb to rs232 cable to install and vista keeps indexing the com port as it trys the next install. I have downloaded the driver, updated the driver, deleted the driver and reloaded the driver to no avail. Now it shows 26 com ports in use and tells me the device I am trying to install is trying to use a display name that is already in use. How do I clear this up so I can install this device?

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i am using core 15 processor,dell n4110 laptop,, i tried to connect profolic usb to serial(rs232) cable. i tried in win7 professional and professional i installed but device is not working.. error statement is coming as "this device not srarted(code 10 err0r)"

Answer:code 10 error,usb to rs232 cable

Hi Ebin
Try to visit the following site:

USB to RS232 cable keep receiving a Code 10 message - Microsoft Answers

Good luck

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I have a set of scales that outputs data on rs232. I need to read the data (weight in grams)multiply by a price per gram and output to a rs232 LCD display.Is there an easy way to do this. the scales constantly output and the price per gram has to be adjustable

Answer:RS232 data converter and output

Easy is a relative term.Most scales like that are used in some company or way that demands some software in order to be sold. Look at the makers web site for how they expect you to use the product. We still have many running a DOS app.1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.

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Since installing SP3 to my Windows XP Pro system my RS232 serial port no longer works. I have a Hyperpen tablet that has an RS232 connection so it no longer functions. Is there a converter that I can attach to the male RS232 so I can connect via a USB port? I have seen a USB 2.0 to RSB (male) serial adapter dongle but that is of no use. I'd appreciate any suggestions towards resolving this.

Answer:RS232 serial port not working

Have you checked in Device Manager to see if it is working there , or if there any conflicts . It won't have just broken , it must be a software problem as it occurred as you loaded SP3 , it might just need reconfiguring , what does the tablet need in terms of port speed etc. , data bits , flow control etc. ? Ashley

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Dear Friends;
We have many software installed in Laptop having WXP for trouble shooting purpose at machines. Communication of many devices is done through RS232. Some time it happen that a we fail to communicate with a device while everything is ok because some other software has already captured RS232 port of Laptop and it is hard for me to find out which software has done that.
Yesterday, after making communication with a PC via two soft wares, I tried to hibernate the PC but it failed to Hibernate as Com port was busy/captured while all the programs were closed. Is there any way to know which program has captured the Com port?

Answer:How do we know which program captured RS232 port??

I have used Portmon with XP 32 bit:
I am not aware of an equivalent utility though for 64 bit XP.

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Here is the deal. Where I work we have a ticketmaster application that uses a seperate RS232 network. This means special lines that run to a special little ticketmaster box in my switch room. Needless to say it is a royal PITA when we have to move these computers connected to this special network.

So to fix this I was hoping there were some kind of RS232 to ether net adapters out there. I know they exist, but I think the solution I need is special. i need an Adapter on the PC side that talks to an adapter on the switch side. So basically the flow would go like this:

COM Port --> Convertor Box --> Ethernet --> Converter Box --> Com Port on Special Box

Anyone have any suggestions?

Answer:Piggy Back RS232 Over Ethernet

Is it realy Ethernet or justr cat5. (meaning is there going to be a ethernet switch in between?)

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is a RS232 port the same as my 9 pin com port?if I wanted to make software ROMs for my 8-bit bbc micro, what would kind of eprom programmer would I use?I'm a complete n00b in this field.

Answer:RS232 port & eprom Programmer

try an emulator to save the grief......Link:>

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I have a CyberPower USB to RS232 adapter. From the research I have done this should create a Com Port in my "Device Manager" so that programs
are then able to use it. I have researched this specific device and there are apparently problems with how it works on WIndows 8.1 but I have not been able to find a solution. The driver for the device was installed by WIndows plug-and-play controls. It decided
that the "HID-compliant vendor-defined device" driver version 6.3.9600.16384 was appropriate, however there is no Com Port in the "Device Manager" and instead a "USB Input Device" appears corresponding to the adapter each time
it is plugged in. Under the "Devices and Printers" the "Unspecified" device "CPS RS232 USB Bridge for UPS" shows up. 

When I attempt to use drivers from a different source (the manufacturer of the USB to RS232 adapter), the plug-and-play ignore the new drivers and use the ones from above.

How can I get the Com Port created so that I can use the adapter properly?

Is there a way to circumvent the plug-and-play and use the driver from the manufacturer?

Thank you for your help.

Answer:CPS RS232 USB Bridge for UPS - not creating Com Port

Regarding current situation, let?s try to manually install the driver by following these steps:

Device manager -> Right click the device and choose update driver -> Browser my computer for driver software -> Let me pick from a list of device driver? -> Have disk -> choose the driver manually to install.

Then let me know whether this device can work fine.
For further troubleshooting, please post back the image for descript more detailed about your issue.

For your reference:
SOLVED!!! cps rs232 usb bridge for ups driver UPDATE / DOWNLOAD
Please Note: The?third-party website/product discussed here is manufactured by a company that is independent of Microsoft. We make no warranty, implied or otherwise, regarding this product's performance
or reliability.

Kate Li
TechNet Community Support

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I have a need for an RS232 port probably PCI, but I see such a wide diversity of prices. Which should I choose? Some have a UART and some do not. Do I need a UART? Thanks, Jim

P.S. I'll be using it with ham radio software called Ham Radio Deluxe (HRD) and a ham radio transceiver Yaesu FT-950

Answer:Adding an RS232 PCI port to my desktop

Check to see if you have a PCI slot. Some newer PC's only have PCIe slots and if they have a PCI slot it is a "bridged" slot to the PCIe bus and many PCI devices will not work or work properly on a bridged PCI slot.

I would check and see what others with that software are using.

(ex W5DVO/ZD8JES).

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Hello, so I bought cheap usb to rs232 cable off ebay and been trying to get it working. I tried installing many different drivers from internet and still windows is not recognizing my cable. I tried to copy drive file to system32\drivers, no luck.

Has anyone else had similar problem? Do I need to buy prober cable with driver cd included?

Thank you

Answer:Usb to serial rs232 no working drivers

You need a Prolific PL2303. Its the ONLY one I've found that will work with my wife's Singer Embroidery machine. It works on both Win 7 and Win 8. Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303HX Rev D Chipset): Computers & Accessories

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Hello All,

As a surveyor, I'm trying to slowly solve all the glitches on my new Windows 8.1 laptop.

1. Mouse

I often visit this NSW government site SIX Maps

When navigating the map, you use the mouse scroll wheel to zoom in or out and hold down the left mouse button to pan.

In my new windows 8.1 laptop, the scroll and pan functions won't work.

Iv'e tried 4 different mice and none of them work but they all work on my old XP laptop.

I've also tried 2 browsers (Chrome and IE)

I have also been in touch with the NSW goverment support team to no avail.

Looking in control panel, I couldn't recognise anything that would help.

Does anyone have any ideas?
2. USB to RS232 serial port cable replicator

This cable is used to download/upload information to the survey instrument. It worked fine on Windows XP, but will not work on Windows 8.1. It may be something to do with the port configuration.

Please note that the software is very old and I had to create a virtual XP machine using VMWARE to run it. (As well as some other obsolete software such as XTGOLD and Q.EXE! Any one remember these? I've yet to come across any file editing program to equal Q.EXE)

Hopefully someone will have some ideas otherwise I'll have to go back to the manufacturer and they'll charge more than I paid for the computer!!!

Thanks in advance for your help,


Answer:Problem with mouse and USB to RS232 cable

Well, I tried the link you provided and I was able to scroll using IE, Logitech Mouse, and Windows 8.1 Pro (64 bit). However, when I first accessed the site, it said that their site would work better with FireFox or Chrome. I have Chrome installed but did not try it.

USB to RS232, which end connects where? Does the USB end connect to the computer or the survey equipment? When running your XP, does it provide an error when you try to connect upload/download data? I would think that your VMWARE and XP will be able to handle everything, but you will need to play with port settings to have everything configured the way it was before. For example, my wife's computer is Windows 8.1 Pro, and I have her run VMWARE and Windows XP so she can use the embroidery module for her sewing machine. The one thing you have to do is to make sure that when you start the VM machine, you must tell the VM machine to use anything plugged into the USB ports to be used in the XP and not the Host machine.

Anyway, don't give up yet and keep poking around you'll find a solution.

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wont print on rs232

Answer:tm-t88iii rs232 wont print it have Windows 7 drivers ?? I was under the impression Epson stopped support at XP ?

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What is the maximum length that you can run a serial cable before having communication problems?

Answer:RS232/serial cable length

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The ThinkPad Power Management Driver download page is now blank. Is it no longer available or just being updated?


Go to Solution.

Answer:Power Management Driver download no longer available

Hi sgegreen,
Try this page .  These should work.

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We?re excited to announce the release of Windows Application Driver (WinAppDriver) version 1.0. This 1.0 release is the first WinAppDriver release without the Beta label. This release is a big milestone for the project which was first introduced during Build 2016 and has been growing in adoption.

What is WinAppDriver
Today, it?s easier than ever to build software for multiple platforms and devices. Microsoft supports any developer working on any platform to build software for any device. We?re showing this support in many tooling investments including .Net, UWP with .Net Standard, Rome, VS Code, Xamarin and WSL. In alignment with this vision we need a test tooling strategy that is equally cross platform and cross device, and that is where WinAppDriver fits in.

WinAppDriver is an open standards based tool for UI Test Automation. You can use WinAppDriver to run Automated UI tests for any application on Windows 10. The support for open standards means if you?ve been running UI Test Automation using Appium or Selenium, you can use your existing tools and preferred languages to write tests for Windows applications.

Version 1.0 Details
This release of WinAppDriver is our first non-Beta for a few reasons:
WinAppDriver now supports the core set of features we initially aspired to back when we launched the project. This doesn?t mean we?re done, but we do feel confident about the supported set of features.
Over the last year we?ve received feedback from the commu... Read more

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Hi peepsJust been chatting to a freing and they informed me altough they've forgotton web address ,of a site that listed all old TINY products that are made by other manufacturers but sold as tiny. does any one no of this site address plsthanksRATTY :-)

Answer:Driver website for old hardware no longer suplied

try running belarc advisor or aida 32 this will tell you what components are in the machine you should then be able to trace drivers for them

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