Help! should i change my motherboard?

Hi,

here is the problem:

1- Sometimes I change my memory modules and the the comp wont boot, then I trial and error one module at the time and the PC boots (solution that works most)

2- Sometimes when won´t boot I do an trial and error by unplugging components one by one and see if the PC boots, in this atempts 2 times I unplugged the diskette drive and the PC booted. Note: the first time I thought that i had an bad diskette drive and I replaced with a new one.

3- Sometimes when the PC wont boot i take the graphic card out and when i put it again the PC boots

4- Sometimes nothing of these works and i.e. I go to eat or to sleep and the next time, voilà, PC boots!

Help! should I change my motherboard? It´s an old Asus P4C800 with Intel 875P chipset, at the time in 2004 it was top of the line (it should be it cost me about 270 dollars ).

Although the above is boring to me, it only happens sometimes (not always) when I have to open the PC and change some component and even when happens once I do one of the above solutions and it works i never have to worry anymore for 1, 2 or 3 years or more unless I have to change some component again.

When you have these issues, try to flush all the power out of the PSU and MOBO and then try to restart the machine. Just unplug the machine from the wall and hit the power button a time or two and all those dirty electrons will be flushed out of your caps. This has worked for me on more than one occassion and I'm not quiet sure. Try and see what you get.

Also, I agree with CompTIA_Rep. It does sound like a PSU problem.

Well in that case, I'd have to suspect the motherboard probably. It may just be old now. But, replacing the board will probably require replacing CPU and RAM also. Plus, 4 years is a good interval to start updating components anyhow

Yea I understand your dilemma... Just gonna have to find some parts from spare or from a friend to try and test and find the culprit before you invest alot of money into parts you don't need. Good Luck!