New computer crashes

Put a new computer together and it crashes randomly.
Specs are,
-Asus Sabertooth 990FX
-AMD FX-8120 Zambezi 3.6 Ghz 8core
-CORSAIR Vengeance 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
-EVGA 025-P3-1579-AR GeForce GTX 570 (Fermi) HD 2560MB 320-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

I have no idea what the problem is, like i said it will boot up just fine, but after a few minutes the display with black out and the graphics card fan with kick up to about 100%. I have to reboot because the comp locks up.
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More about computer crashes
  1. Does the computer ever shut off or just lock up? or do you have to turn it off? If it does shut down, do you have to reset your psu to get it back on? Does it only do it under load or just when idling? What are the temps? Have you tried using the other display port on your card?

    could be a bad psu, bad card, bad slot, bad drivers, etc.
  2. No, the computer doesnt shut off by itself, i have to reboot it. I have yet to play any games or use any programs, the comp crashes randomly. The only thing ive done is watch youtube videos, but it doesnt crash when i do that.
  3. I believe it is a compatibility issue, but i have very little knowledge of computers so i have no clue.
  4. Run the computer with only 1 of the ram sticks. If it works let me know if not try the other ram stick alone and let me know.
  5. Ive already tried that, but it still crashes
  6. Have you ran the computer with a diffrent video card? or with the onboard if you have it?
  7. sound like a heat issue. boot into your bios screen and not windows and check the cpu temps...if there stable for 10-15 min and there no lock up. check the mb bios rev and make sure you have the newest ones..there are sometime bug fixes. if it does not lock up in the bios..boot into safe mode and run msi afterburner or another program to check the gpu temps. also open up hardware monitor and check your power supply voltages in safe mode. if the pc is stable in safe mode. boot off of a cd or usb stick with memtest and see if your ram ok.
  8. Alright ive been running the comp in bios and it stays stable, also the bios has the lastest version. Ive only ran that graphics card also.
  9. try running prime95 to see if under cpu load the pc locks up and then try loading just the gpu with a gpu burn in program. if it locks up with the could be the gpu or the power supply not holding...try using msi afterburn and watch the power from the gpu.
  10. What bit does it crash at because then i maybe able to solve the problem?
  11. I figured out that the power supply i bought was faulty, also i don think i was getting enough power, so i ordered a larger psu which should fix the problem. OTher than that, i might have to rma the gpu. Hopefully the motherboard wasnt damaged.
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