Mobo... Can't get it to boot. Plus 4 red led displays

Ok, this computer refuses to boot. It's an MSI KT3V mobo with 256mb pc2700, and an AMD Athlon 2000+. Now, you know that bracket in the back with the 4 LED's that helps you troubleshoot it. When I turn on the computer, I hear no beeps although it obviously powers up, and that bracket, all 4 led's are red...which isn't covered in the manual. If you have had this happen to you, or at all failiar with the situation, please help.

Has it ever booted? Is this a new build? When it powers up, does it shut itself down right away or it just stays running but no boot?

It used to boot. Then tamara (now ex g/f) got on it...and she wanted to swap the keyboard and mouse, she did this with the power on. USB keyboard (hot pluggable so n/p) and a ps/2 mouse. Then she said she was on for 15 minutes and the monitor went black. Haven't gotten it to boot since.

When I attempt to boot, it powers on, but that is all and all 4 led's are red on the MSI bracket. Monitor stays black. Also, no beeps whatsoever from the computer. I've swapped out the videocard and RAM...so I know those aren't an issue. I've also swapped out the heatsink. And the power supply is less then 4 months old. 350w. The clue is the 4 red led's on the MSI bracket, but that's not covered in the manual. I e-mailed MSI, but I get those automated replies...drives me mad...

I think the CPU maybe dead. If so, I got myself a new keychain!

Yeah, you may be right, but you better swap it out just to make sure. It may be the mobo. I don't have a lot of trust in the D bracket.

Yeah, I'm going to borrow my mom's 1700+ I used when I built her system. If it doesn't boot, then it's definitly the mobo.