Computer don't work

[Butchk]

I am repairing a computer for a friend that I would like a second opinion on. It's a Pionex computer the board has everything on board,ie video and sound. It has a Cyrix 233 cpu with 64 meg of ram. The problem is the last time they tried to turn it on it froze three times then it didn't do anything. When I hooked it up all and turned it on the screen stays black. The hard drive makes a little noise and then nothing. The first thing I looked at was the memory I reseated it and changed slots. I even swaped it out with another set. Still nothing, the fan on the power supply starts to turn then it stops. Then I tried changing the CPU the hard drive stopped making any noise. This unit didn't have a CPU fan on it when I opened the case. All that was on the CPU was a heat sink. I am leaning towards a bad mother board. I have worked on other computers when the fan quit working on the power supply and as soon as you figured out what was wrong it started working again. The mother board is a atx, but it also has a at connection on it. So I hooked up an at power supply to it and got the same thing as before. Any help would be more than welcome.

Thanks Butchk

[tlwhite76]

Butchk: Hi, I think you've either got two bad power supplies or a bad motherboard as you suspect. I would still see if the components that you can pull off the board work in another working computer. This sounds like a fairly old box, you could have a combination of a few other problems. That's why I'd check the other components.

[BC]

So you swapped memory and power supplies right? Did you swap it with a good PS? It sounds like you could have a couple of things wrong. Was there anything that it could have been that hit the pc? Like poweroutage? Being submerged? Or AOL installed http://www.sysopt.com/forum/smile.gif

[tlwhite76]

On second thought, replace with a good ATX power supply. I don't believe you ever solved the power supply issue.

[Butchk]

The power supply I used is a known good one. The ram is also good, thats why I think it is the mother board. Anyway my friend wants to up grade so now it will be a little sooner than he expected. Thanks for the help I new I could rely on you guys out there.
thanks again
Butchk

[Dash]

Well, some M/Bs had to make you jumper-select between ATX or AT, so when you plugged in AT make sure you had the AT jumpered. Also My comp used to do that, I had a burnt out motherboard, damnable computer show, i looked, on closer examination a chip was actually cracked....oh well..

[socalgal]

Double post glitch, I didn't catch them in time.
http://www.sysopt.com/forum/Forum2/HTML/004238.html

If something like that happens again to anyone, just edit the second one - say double post, or something - then we'll only have one thread going http://www.sysopt.com/forum/wink.gif

[This message has been edited by socalgal (edited 01-14-2000).]