I've got a USB keyboard which is working fine in windows, but is disabled during boot-up (although it has worked in the past). I believe this may be due to having having a PS/2 keyboard installed. In device manager the PS/2 keyboard is shown with a yellow exclamation mark. I have tried uninstalling, disabling it, reinstalling the keyboard drivers, and disconnecting it physically, and yet the keyboard always shows up in devices with the yellow exclamation mark. The keyboard is using IRQ 1, according to system info. What do I need to do to get rid of it? And how do I get the USB keyboard recognized at bios time (as it used to be)?