>There are two DRAM SIMM slots empty. But it was working fine because there 
>is the onboard RAM. What if the onboard RAM is bad?

Unless you are good with a solder iron and can get replacement chips... 
if the onboard RAM is bad, you are pretty much SOL.

At that point, find a new motherboard, or just a whole new machine.

-chris
<http://www.mythtech.net>