1600 mhz and Gigabyte ga p55 ud3 *HELP*

*** up until i start playing a game!

Installing win 7 (have tested both x64 as x86) works good boot up fine, install all the drivers and everything is working properly.
General surfing and normal use means no problems.

That is when I start a game, in this case, CoD 4, it is prima play for about 5 minutes. Then suddenly everything freezes, the sound and the bass goes in the top and the screen turns one color.

Then when I resarts Im met with the regular screen that I should choose if I want to repair windows or start. Whatever I choose a BSOD appears.


Technical details:

*** STOP: 0x0000007F (Ox0000000D, 0x00000000, 0x00000000, 0x00000000)

BIOS is updated to f5
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According to BIOS VCore 1.172V

CPU temerature 40c

Memory is ticking on the 1333 MHz and DDR voltage 1.5V Profile QPI voltage 1.1V.

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So to the qusetion , what can be my problem . Can it be that my GPU is messed up ?



*EDIT* Just ran a mmtest , got like 9000 errors and counting guess its the memmory ?



Grateful for all comming replies / / Edvin