Originally Posted by Cortb
You might check the motherboard for capacitors that are blown, leaky, or just plain missing.
I noticed that there was in fact a bulging electrolytic capacitor near the processor usually bad capacitors would make the CPU fans go crazy from experience with faulty caps on motherboards especially if its the caps next to the CPU.
Anyway I decided to get this motherboard on my work bench and brake out the soldering iron and replace all the electrolytic caps on the motherboard, usually if one has failed then its probable that some others are bad or out of spec and seeing that you can't really test electrolytic capacitors not with the tools I have "I'm old skool" then its best to replace them all.
Anyway I had success with getting the motherboard fully working.
I've got to say it is rare for a motherboard of this age to have those problems I'd expect that on an older motherboard but oh well you live and learn.