I am working on a Compaq Presario SR2010NX .. for some reason if anything is plugged into a usb port then the computer wont boot up. I know it needs to be changed in the BIOS. Problem is when I access the BIOS it wont read the keyboard. I have tried both a usb and a Ps2 keyboard but neither one will work once in BIOS. Both work fine in windows thou. I would use it for target practice but im trying to fix it for a friend.. Any ideas???