Need Computer Help ASAP!!!?

I have just had a problem about the same as yours. In my desktop I have installed a new Belkin 2.0 usb pci card some time ago. I was haveing trouble with a ac powered hub at the time. It keeped shutting off which messed up the drivers for my belkin usb card. I went to the windows help forum and they told me to uninstall the drivers for my usb card shut my machine down then remove the usb pci card from my machine. Then restart the machine without it. Then shutdown reinstall the card the drivers reinstalled auto. Doing this fixed the problem for me. hope this helps