Win XP Stopped recognizing some USB devices

July 22, 2010 at 06:50:01
Specs: Windows XP pro
My machine all of a sudden stopped recognizing some, but not all, USB devices. I have several:
- mouse
- printer/fax
- digital camera
- external HDD
The only thing that seems to be functioning fine is the printer. The mouse is not working. When I connect the camera to the machine, it does not see it. Same with the external drive. McAfee and spyware scans found nothing. Rebooting does not help. When I go to Control panel -> system -> hardware I don't see any error messages about USB ports etc. What's going on? Thanks much!

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#1
July 23, 2010 at 03:08:34
Advanced troubleshooting tips for general USB problems in Windows XP
http://support.microsoft.com/kb/310575

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#2
July 23, 2010 at 09:51:41
Most computers have multiple USB controllers that usually serve two ports per controller.

First check in Device manager to verify all USB controllers are working correctly. If they are not then move the devices to a working port to see if they then function. If so, go into Device manager and remove all the USB controllers and reboot. If you can't, shutdown correctly then try the controllers one by one. Hard to keep track of what is what but not impossible.

You could have damaged one or more controllers by connecting a damaged device.

Also, follow the link provided above.


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#3
July 23, 2010 at 15:45:34
Instructions from the link below read this:

Remove and reinstall all USB controllers
...
5. Right-click every device under the Universal Serial Bus controllers node, and then click Uninstall to remove them one at a time.
6. Restart the computer, and then reinstall the USB controllers.
...

Is there a standard location from where I can get all the needed USB controllers, or at least some type of "generic" set of those, to reinstall them at step 6?


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Related Solutions

#4
July 23, 2010 at 16:06:50
You shouldn't need to. Windows should find and install them automatically. Are you running SP3? If not, I suggest that your do so.

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#5
September 1, 2010 at 06:52:29
The problem went away and then came back. It seems that the only way to have the machine recognize a USB device is to reboot it with the device plugged in. I tried the reinstallation of Universal Serial Bus controllers that was suggested in http://support.microsoft.com/kb/310... and I also tried unchecking "allow computer to turn off device to save power" for all the USB root hubs listed in the device manager, but it did not help. Now if I plugin a USB device into a port, I either get nothing at all or a message about the device not being recognize. What else can I try? Thanks!

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#6
September 1, 2010 at 07:57:19
If you have multiple high current devices connected to the same USB controller they can overload the capacity. USB controllers usually serve 2 USB ports, sometimes 3. They will likely be side by side. When serving 3 the 3rd is usually a card reader.

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#7
September 1, 2010 at 07:59:57
I am connecting the same USB devices as before: a printer/all-in-one, a USB flash drive and a camera to download pictures.

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#8
September 6, 2010 at 02:43:58
In my opinion the drivers re installation my fix the issue . These will get automatically downloaded if u have SP3 .

In my case it was a virus attack, It destroyed all the data formats of my USB pen drive. I had to go for a data recovery software to get them back.


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#9
September 6, 2010 at 21:55:31
Can any one help me? because my winXP wont recognize a Card Reader

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#10
September 6, 2010 at 21:56:39
what should i do? my PC won't recognize a card reader

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