Recent Problem, tried new powersupply

Well, my computer wont stay on for more then 5-8 seconds. CS thought the problem might be the powersupply, so they sent me a new one. Didnt work no difference what so ever. So it looks like im gonna call them and send the whole damn thing in.

I still got green lights on the motherboard, but the tech support guy thinks the motherboard might be defective or damaged (even though i had a few months before this happen, though i did get nvlddkm errors alot in games, common vista problem i think though)

Im curious if anyone has anyidea's what might be wrong before i end up sending it in ( im afraid there gonna wipe my hard drive)





AMD AthlonT64 X2 5200+ Dual-Core CPU
Asus M2N-SLI Deluxe nForce 570-SLI
2048MB [1024MB X2] DDR2-800 PC6400 Memory Module Mushkin
NVIDIA GeForce 7950GT 512MB
250 GB HARD DRIVE
18X Dual Format/Double Layer DVD±R/±RW + CD-R/RW Drive
3D Premium Surround Sound Onboard
Onboard LAN Network (Gb or 10/100)
Wireless 802.11g 54Mbps PCI Adapter