Cleared CMOS, now computer won't boot up all the way :(

[lfestylez]

I have a ECS K7S5A designed for Athlon XP (Throughbred up to XP2600+) 200/266 Mhz FSB.

CPU burnt up, so i got a Sempron 2800. Worked fine, but in the computer property it said it was only running at 1.03 Ghz. I did a lilttle research online and found out that my CMOS might need to be resetted, so i did it.

After that, my computer boots up for like 5-10 seconds and dies. Keeps doing it nonstop. I resetted the CMOS several times, took out the battery, disassembled everything and put back together, but still no luck. Any clues? I'm probably wrong, but do I need to get a Athlon XP cpu to get it working again since the MOBO was resetted?

Thanks in advance...

 

[lfestylez]

I resetted the cmos by toggling the jumpers. Also, i put the burnt cpu back on, and the computer turns on and stays on (but nothing happens). I just did this to see check if the power suppy was bad or the board was dead...anybody can help me out? Thanks