Suddenly no USB Support

[HotRod]

Came in this morning and my PC running XP Pro no longer has any USB support.
I went into the hardware manager and deleted the USB devices and rebooted
the PC and it "Found new hardware" but none of the USB ports are working. I
also tried to update the drivers doing a right click in Device Manager.
IDEAS?

Cross posted to xp.general & xp.help_and_support

 

[Guest]

What have you done recently to the computer? Absent any information, I'd
have to suggest 1) checking all the cabling and 2) reinstalling the
motherboard/chipset drivers.

- John

 

[HotRod]

As far as I know I haven't changed anything. When I left my office late last
night everything was working fine. I came back this morning and it wasn't.
I'm 100% sure know one was using my PC during that time.

Any idea how I can get the make and model of my motherboard/chipset without
opening the case?

 

[R. McCarty]

Belarc Advisor is a good hardware/software inventory tool.

I'd be sure to enter BIOS setup and verify under the peripherals
category that the USB controllers are enabled.
http://www.belarc.com/free_download.html
However, you said that devices were re-enumerated so it's likely
they've been misidentified or placed in the "Other" category.

 

[Rock]

Came in this morning and my PC running XP Pro no longer has any USB
support. I went into the hardware manager and deleted the USB devices and
rebooted the PC and it "Found new hardware" but none of the USB ports are
working. I also tried to update the drivers doing a right click in Device
Manager. IDEAS?

Were any updates applied last night through windows update?

 

[HotRod]

Any idea how to check that?

I also noticed that with a USB thumb drive plugged into the USB port it does
not pull any power so there is no power at the USB port.

 

[Rock]

Any idea how to check that?

I also noticed that with a USB thumb drive plugged into the USB port it
does not pull any power so there is no power at the USB port.

Could be a hardware failure. To check for updates go to the windows update
site, do a custom scan then click on the history link on the left side. ( I
don't recollect exactly what it's called).