I'm new to all this and was wondering if anyone could help me. My old motherboard died so I purchased a used one...it's a PC Chips M599LMR. I installed it and started my computer; first off, I have a Cyrix MII-333 processor and the new MoBo recognised it at 150MHz then it said the CMOS battery was low and gave me a "Keybord Error' message then it froze. I made sure the keyboard was well plugged into the PS/2 port, and replaced the battery. Again, it gave me the same thing. I plugged in a USB keyboard this time, started the computer and hit the DEL key to edit the CMOS. I fixed a few things there (date, time, CPU speed), saved it and exit...computer restarted into Win98 where I got an error message staing that the PS/2 mouse wasn't plugged in (even though it was). So I think the PS/2 ports are dead...am I right? Or do I have to set something for them to be recognised? I also think (unless I'm being paranoid), that this MoBo (MoFo? : ) screwed up my hard drive and killed my floppy drive (click of death). I read the specs on this MoBo and it seemed like a great one..but this used one seems to be junk. So are my PS/2 ports dead? Should I return it? Thanks for reading.