I have two rigs where I swap out the USB mouse and keyboard. One runs on win98SE and the other XP. Lately on the win98 rig I've been getting this PS/2 error upon boot up and the mouse/keyboard dead in the water. After a restart and scandisk it's ok. The boot up screen shows legacy USB active so can't pinpoint the issue. Maybe I need to turn the power supply on before plugging in the mouse/keyboard? I could just re-install the usb drivers but wanted to see if others have come across this first.