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M5a99x evo,Can't access bios. pc shut down suddenly

Hi everyone.
Today i found out my computer will suddenly shut down everytime after playing bf3 for 5 min.Then when i tried to start it up, everything started working then shut down again. I need wait for 1min or unplug the power to get it working and go into windows. Then i wonder if i overclocked the cpu too much causing the overheat. Then i found out i cant access to BIOS now, everytime i hit delete button, the computer shuts down. I built the computer 3days ago. works fine in the first 2 days. Please help me :pt1cable:

system:
cpu: X4 955
mobo:Asus m5a99x evo
graphic cards: gigabyte Radeon hd 7850 2gb, His hd 7850 2gb
RAM:8gb Gskill
PSU corsair gs 800
5 answers Last reply Best Answer
More about m5a99x access bios shut suddenly
  1. Best answer
    Hello, are you using ONE stick of 8 GB ram? If you are the mobo you have can't support any ONE stick of ram exceeding 4 GB. To fix you will have to buy TWO sticks of 4 GB ram. Sorry for caps, lol.
  2. Yizhong said:
    Hello, are you using ONE stick of 8 GB ram? If you are the mobo you have can't support any ONE stick of ram exceeding 4 GB. To fix you will have to buy TWO sticks of 4 GB ram. Sorry for caps, lol.

    Thanks for the reply, bud
    I'm using 2 4gb ram. Sorry I typed it wrong in the original post
  3. It all good! xD
  4. Best answer selected by FrizzyBaBeHYFR.
  5. @Yizhong
    I'm pretty sure that Motherboard can handle 32Gb of RAM, and if my math is still correct and valid (might have changed in the late years xd), 8x4=32...

    http://www.asus.com/Motherboards/M5A99X_EVO/#specifications
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