USB Keyboard/mouse shut down upon windows boot
First off, PC info
MOBO: ASUS M2R32-MVP
Processor: AMD Athalon AM2 chipset
HDD: Maxtor (not sure of model number or size right off hand)
RAM: Corsair 2GB (2X1GB)
Any Other info upon request
Upon system startup I have full use and control during POST, able to enter bios setup and so forth. Upon Windows loading screen (Windows XP Media Center) keyboard and mouse shut down, light inside optical mouse will flash when button is pressed, otherwise unresponsive. Have tried them in all USB ports including PCI card. Have tried keyboard and mouse on another computer, still working fine. Have tried other mouse and keyboard on problematic machine, same problem. Have checked BIOS settings and all usb options are enabled. Was hoping someone could give me a couple Ideas as to how to fix without slaving drive as I don't normally have time to do this and I want my PC back (it's the wife's thats messed up so she uses mine while I'm stuck with our ANCIENT laptop).
Thank you for your help.