I'm working on a vintage computer for a customer, he really does not want to upgrade if he doesn't have too but It's not looking good at this point. The computer in question is a compudyne 100mhz with windows 2.1. This PC operates industrial equipment so it's not an easy rebuild/replace. The computer requires ISA slots which were discontinued on most motherboards at the turn of the century. You can still find ISA slots on motherboards but they are by no means common. The drivers will need to be recovered from the hardrive the driver discs were floppy and are no longer readable, my guess is floppies do not hold data over 20 years. The PC boots up fine however the serial port was disabled. So I went out and bought a PS/2 keyboard not easy but once I plugged it in got "No Keyboard Connected Keyboard Failure" tried unplugging everything but keyboard/monitor no luck, tried resetting cmos no luck, disconnected hard drive/floppy/etc... so that only thing connected to the motherboard was keyboard/monitor no luck. So I pulled the motherboard just to check the solder connections to the motherboard they look good too. I need to get access to the bios too enable the serial port however this is not going to happen without a keyboard. Anyone have any clue on how I could get this keyboard working? I have tested with another PS/2 keyboard just to rule out the keyboard being bad, same result chances both keyboards are bad is a long shot. Any help is appreciated thanks in advance!