I've got a PC bootup problem. System is XP with a PS2 keyboard with a PS2 connector into the PC's PS2 keyboard port. The system hasn't been used for several months. I suspect the motherboard battery is flat, but I'm not convinced that would explain what happens when I boot.
On booting, the keyboard flashes its lights, which seems to indicate the PC is capable of communicating with the keyboard. I get an initial screen that says "Press DEL to enter setup" (i.e. the BIOS).
My problem is that pressing DEL does not result in any action, i.e. I can't get into the BIOS. (Nor do ESC, F1, F2 etc for that matter.)
I have tried alternative (known to be working) PS2 keyboards, but there is no difference.
It is possible the keyboard PS2 port is blown in some way? (But if so, why does it flash the keyboard's lights?) I have tried booting with the keyboard plugged into the PS2 mouse connector port, but the symptoms remain the same.
Could it be the main power supply in the PC?
Would replacing the motherboard battery help or is this a red herring?
(I haven't yet had time to take the cover off and look inside, although this is the inevitable next step.)