I would suggest checking to see if there are any bulged capacitors on the Motherboard, it's VERY likely being an Abit.

No that I think about it, maybe I should. I will desolder and resolder the PS/2 socket. It goes in a little bit when plugging in stuff anyways.

It's possible a loose connection is shorting stuff out. PS/2 has no short/hotplug protection.

Vicxar27 wrote:

I have moved the forum from PS/2 keyboard locks up after startup . Basically after a few minutes on my PC the PS/2 Mouse and keyboard stop working, especially if I'm playing video games. I have an Abit-BH6 and what I've noticed is that anything on the PS/2 ports freeze, suck as the mouse and keyboard, but USB works fine. I've tried combinations of different input devices (USB keyboard and PS/2 Mouse, for example) and only the PS/2 peripherals lock up (as in they freeze in the last action it was doing ) I guess I could buy a PCI USB card, but I don't want those PS/2 ports to go to waste 😀. I am running Windows 98 SE

I have the exact same issue with my Biostar MB8433UUD-a socket 3 board. It works fine with a serial mouse, but using a PS2 mouse the machine will stop taking input altogether at one point, tough the game still runs fine.

I found out the socket connector is intact. It's gotta be the capacitors.

Does it makes sense for only mouse to stop functioning, with keyboard totally fine?
Besides, putting computer to sleep (standby) then resuming, fixes it.