New PC stopped working, is it borked?

[Evoker]

I recently got this PC:
Asus P5E iX38
Q9450 2,66Ghz
Scythe Ninja PLUS Rev B
TWIN2X4096-6400C5DHX x2, a total of 8GB
Radeon HD3870 512 GDDR4
2x Seagate Barracuda 7200.11 500GB 32MB Cache
Corsair 620HX
Windows Vista Home Premium 64-bit (fully updated)
I picked the parts and had a site assemble it, test it and send it to me.

The first time I tried to play COD4, the PC restarted after a few mins. I thought my GPU might be overheated so I used RivaTuner to set the fan speed high and tried to play again. The temperature seemed to be fine, but it still restarted. Then I used MemTest and I got errors almost right away. So I started testing the memory one stick at a time and got no errors. Then when I tried to start the PC with two sticks, it started to act weird. Basically, when I turn it on, the lights go on, the fans go on... then a couple seconds later, they both go off. It keeps repeating this over and over untill I cut the power. I have no idea of what the problem here could be so any help would be appreciated.

Edit1:>>>>>>>>>>>>>>>>

I'd like to reply but it just says that this thread doesn't exist if I try to. Thanks for the replies so far, but like I said, I can't change any settings or anything. After I turn the PC on, the lights and fans go on and then almost immediately go off again... and repeats this over and over. Nothing shows up on the monitor.

 

[pitchblack]

Sounds like you might have a bad MB. Try testing one memory slot at a time in memtest with a stick that you know is good.

 

[badge]

Your 8 GBs RAM would require the voltage to be set at 2.1-2.2v in BIOS. Also, the NB voltage should be set to 1.4v. This is what it took to smooth out the 8 gigs in my X38 running at 1066MHz. You might try setting up the voltages and use one 2 GB DIMM and see if the system crashing stops when you run software (games).

 

[badge]

Agree with pitchblack, MB may very well be bad.

 

[Evoker]

Thanks for the replies so far, but like I said, I can't change any settings or anything. After I turn the PC on, the lights and fans go on and then almost immediately go off again... and repeats this over and over. Nothing shows up on the monitor.

 

[Evoker]

Could a plug of some sort have popped out while I was inserting ram? It wouldn't be obvious to me because I'm not into building PC's.