motherboard or hard drive?

[ffxatticus]

I will tell you the truth,I tried that with my old PC ,and I had crashing problems.Building a PC is something anyone can attempt,but the slightest of problems can lead to serious problems like crashing from undue CPU overheating.If you take the problem to a professional PC technician he should tell you that what you need is a new PC.The best you can do is back up any crucial files,gather money,buy a new PC and do not ever try to manipulate it by any means,only a technician can do that.
The situation you're in,is incurable.

Well, I built the computer in comp tech class. It was half a school computer and half my friends computer. It's a piece of junk (400 mhz cpu...hahaha), but it worked. But I think I just need to replace the motherboard and cpu.

You what? Incurable? It probably just needs some washers between the board and case. Also the CPU won't overheat if you have a fan on it and their actually alot tougher then you'd think, I used to have a celeron that had been half fried after it got hit by lightning and I still got 80% of it's processing power out of it.

Already put washers in when I put the board in, I think the motherboards just too old and pretty shot.

Try what o_O said first, if that doesn't work check that all the cables are in fully. I don't really think that situations are incurable, all you really need to do is replace parts, rather than a whole PC.

I did what o_0 said. THe monitoring program didn't support my board, cuz my boards so old. The HDD check said that the HD I run all my programs off is fine. I haven't tried the memory test, but the memory I just put it. I'm just gonna have to buy a couple new parts or salvage some from another pc.