mouse/keyboard failure

boot problem:

1)if pc is left off for any length of time it “forgets” it has a primary hd. you have to go into the bios and make it search for primary master. nothing else works.
2)mb not recognizing mouse/kb. checked mouse, kb, cables, kvm-nothing. tried ps2 to USB adapter-nothing. i am guessing that dos support for USB is disabled.
3)can’t get into bios and can’t boot system, don’t care if i can’t use kb/mouse i only need to be able to boot (i can control it remotely)

help!!!
alex

www.alexcooper.org