Windows 7 Random Restart In-Game.

Hello every one,
Recently im having this ANNOYING issue,
While im playing a game my computer randomly RESTART!
No error Log, Nothing!
I have no idea why this happening.
I dont know what kind of System spec you will wanna from me to supply, so ill keep this open,
and if anybody have any idea please tell me.
Thank you.

Sometimes this problem happens when the power supply capacity is not enough.

Please give us this info:

Video card and video driver version
Sound card
Power Supply (how many Watts)

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