USB Ports have stopped recognising devices

[Guest]

I'm running Windows xp pro on a Sony Vaio desktop. For some reason all my USB
ports have stopped recognising devices connected. I've checked device
manager and all USB ports are 'working properly'. As far as I can tell, it
hasn't happened as a result of connecting anything new and I have not made
any changes to to settings/regisrties, etc (I wouldn't know where to start!).
I've tried a system restore to a time when they were all working but no
luck. Connecting, say, an i-pod, the usb is providing power to the device,
but it doesn't register it. Any help gratefully received.

 

[Dick Cardy]

I'm running Windows xp pro on a Sony Vaio desktop. For some reason all my USB
ports have stopped recognising devices connected. I've checked device
manager and all USB ports are 'working properly'. As far as I can tell, it
hasn't happened as a result of connecting anything new and I have not made
any changes to to settings/regisrties, etc (I wouldn't know where to start!).
I've tried a system restore to a time when they were all working but no
luck. Connecting, say, an i-pod, the usb is providing power to the device,
but it doesn't register it. Any help gratefully received.

Have you got a USB mouse to test the USB ports with? Check in system - do
any of the USB components say enhanced (I am check to see if you have USB 2)

Dick

 

[Guest]

Dick,

Thanks. I don't have a USB mouse, but have tried printer, i-pod, scanner,
wireless USB 2.0 Adapter all with USB but none are recognised (but before
last week all were!).
Appreciate your help here.
Regards,

 

[Dick Cardy]

Dick,

Thanks. I don't have a USB mouse, but have tried printer, i-pod, scanner,
wireless USB 2.0 Adapter all with USB but none are recognised (but before
last week all were!).
Appreciate your help here.
Regards,

:

Did you check in system to see if you had enhanced USB (I guess you have
based on your comment). See if the system thinks it is working. Try
re-installing the driver just in case.
After that wait for the professionals to answer

Dick

 

[Pam]

Dick,

Thanks. I don't have a USB mouse, but have tried printer, i-pod, scanner,
wireless USB 2.0 Adapter all with USB but none are recognised (but before
last week all were!).
Appreciate your help here.
Regards,

Because I had several USB devices I had to install a USB card into my
computer. It was less than a year old when I had the same problem--nothing
worked, the card showed up in device manager as working properly, etc. I
finally removed the card and purchased another and all worked well again.
It may be something wrong with the hardware even though it appears in device
manager.

Pam

 

[Guest]

Dick,
Thanks. Tried your suggestions - no luck alas, As you say, seems like a
job for the professionals, esp in view of Pam's helpful posting as well.
Ah, well!!