System restarts when gaming.

Hello everyone

About 2 weeks ago I upgraded my PC from Vista 32bit to a fresh install of Win 7 64 bit. Now when I play BF3 for instance, my computer will shut off within a minute of entering the game and after 3 seconds power itself back on. Once my computer has restarted I can usual play without it happening again. Anyone have any idea on what could be the problem?

This never happened on Vista.


Windows 7 ultimate
i7 2700K @ 3.50Ghz
Asus P8Z68-V PRO motherboard
8gb of DDR3
GTX 580
850W power supply
7 answers Last reply
More about system restarts gaming
  1. Could it be the CPU overheating? A drivers issue? Try updating the drivers
  2. Overheating is not the issue and all my drivers are up to date.
  3. It could be a problem with your PSU. What are the specs on your PSU?
  4. Power 850 Watts
    80 Plus Silver
    ATX Connector 1
    EPS Connector 1
    PCI-E Connector 6
    4 Pin Peripheral Connector 12
    SATA Connector 12
    Floppy Connector 2
    MTBF 100,000 hours

    Corsair HX850W Specifications: Model CMPSU-850HX
    AC INPUT 100-240V ~ 12A 50/60Hz
    DC OUTPUT +3.3V +5V +12V -12V +5Vsb
    MAX CURRENT 25A 25A 70A 0.8A 3A
  5. After a quick google search, I came across numerous good reviews but also a lot of bad reviews mostly of the same issue you are having so even though corsair is a great brand it could be the PSU
  6. Is there a way to test the PSU?
  7. Here is a link to a step by step tutorial:
    It gives you the option to do it manually or with a PSU tester
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