HUGE PROBLEM Geforce gtx 570 ti FARSA

I just built my new computer.
I bought Geforce gtx 570 ti FARSA graphic card wich keep on crashing down in a random amount of time...
the screen says "no signal". its really driving me crazy. when I try to change my background picture it crashes back to "no signal". its up to date.
Im using

manufacturer : gigabyte

processor : interl (R) core(TM) i5-3470 CPU @ 3.20 GHz 3.50 Ghz

installed memory : DDR 3 8 GB

in 64 bit.

please. please help me. its driving me crazy
5 answers Last reply
More about huge problem geforce farsa
  1. What's your power supply unit?
  2. Sunius said:
    What's your power supply unit?

    TopCool realpower 500W
  3. I forgot to mention its not the heat. it stays on 36 - 40
  4. Can't find anything about that PSU, which means it's probably a cheap, no-name unit. NVidia recommend a 550W PSU for that card. Probably not strictly necessary if you have a top-notch PSU from someone like Corsair.

    I'd lay odds that PSU is the problem.
  5. Are both 6-pin and 8-pin connectors connected to the graphics card? I think it's the power supply as well if you connected both connectors.
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