I have the same motherboard, and it automatically shuts down when it hits the heat threshold that's set in the BIOS. I suggest you set everything to default settings or fail-safe settings to see if you can boot. I'm thinking it's possible that the temperature threshold is set too low, or more possibly, you didn't apply the thermal paste and heatsink properly( which will cause the overheating and auto-shutdown.) You really only need a small dab of the paste in the center of the chip, and gently attach the heatsink- these chips are pretty fragile and can crack if you apply too much pressure. Try cleaning the chip and heatsink with rubbing alcohol and and starting over. Hopefully you didn't fry the chip or motherboard, see how things go for a bit if you're able to boot-up, go back into the BIOS and set the multipliers, etc. to what they should be. Good luck.
Ive put all the bits together, mother board, ram... and the other bits
It started up first time fine, after being on for about 5mins in locked up
then every time i turned it on it locked up quicker untill it wont turn on at all.
If i leave it off for a bit, The prossess repeats
I tried changing the heat paste under the heat sink- no diff
I tried changing the bat on the mother bnoard- no diff
Can anyone help, whats wrong?
PC Spec
AMD 2500 barton, asus a7v8x
crutical ram 3200/ddr400
westen digital hard drive(80gb)

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic