USB Drive Not Recognized

[Eos]

I plugged in a Sansa Clip to a side USB port, and immediately got this error. I restarted the PC, and at that point nothing USB connected will function. I was able to recover the (USB) mouse by attaching it via a PS/2 adapter, but the keyboard is not playing nice.

I have removed the keyboard drivers, restarted and installed again. Shut down, plugged in the keyboard and restarted. Nothing.

I have tried a new power supply on the off chance it's going tits up, but the keyboard still does not function.

PC has 4 rear USB ports and 2 side ports. None work at this point. In the Device Manager, clicking the USB Controllers tree shows this error. The "Unknown Device" one. Nevermind the Hub listed, this is all I could find on the web that matches my general appearance. Disabling and enabling the unknown device, then asking to update drivers through the Device Manager only told me I had the most recent drivers.

Windows XP SP2
Microsoft keyboard and mouse
No recent installs of software

I'm going to either reformat or try a USB PCI adapter. Anything else I should try first?

Thanks.

 

[mpilchfamily]

Clear your CMOS and see if that helps. Often a bit of curruption in the CMOS can cause this. Worste case cenerio is csomething got shorted when you connected the drive. There is a chance the USB slots are not fried.

 

[techmanc]

You dont say what you computer hardware is but make sure your using the latest chipset drivers.

 

[Eos]

Originally posted by: mpilchfamily
Clear your CMOS and see if that helps. Often a bit of curruption in the CMOS can cause this. Worste case cenerio is csomething got shorted when you connected the drive. There is a chance the USB slots are not fried.

How can I access CMOS without a keyboard?

 

[techmanc]

So you plugged the keyboard into ps2 port and it doesnt work either?

 

[mpilchfamily]

You clear the CMOS by unplugging the power to the system and then pulling out the motherboard battery. After about a minute plug everything back in. That will clear the CMOS. There is also a jumper on the board that you can set to the other pins for a minute then set it back and that will reset the CMOS. Refure to your motherboard manuel for details.