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Recently I formatted my system and now I'm running Windows 7. When I keep working my system will shut down every 1 or 2 hours.

Before I was using XP3 and did not have this problem. I face this issue only when I started to use Windows 7 as my OS. Below is my system config, please help me to resolve this problem.

OS : Windows 7 Ultimate 32 BIT (ACTIVATED)
HD : 320 GB X 2 Sata
Ram : 2 GB DDR2
Processor : AMD Sempron
Graphic Card : NVIDIA Geforce 6150SE nForce 430 - 793 MB

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Do you get any warning? Does it shut down nicely or abruptly? Try looking at the event viewer for any clues. – EliadTech Nov 26 '12 at 9:05
I don't get any warning, it will directly shut down even without showing "Windows is shutting down" – sravis Nov 26 '12 at 10:29
And how about the Event Viewer? – EliadTech Nov 26 '12 at 12:43
up vote 2 down vote accepted

Make sure that Windows is activated this behavior is seen when the Windows is not activated. If machine is shutting down abruptly check the processor is not over heating.

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Well OP has clearly point out that Windows is activated so its a useless suggestion for him. But yeah about processor you could be right. Also running memtest will be helpful for him. – avirk Nov 26 '12 at 15:29
@Ramhound in his system specs he clears it OS : Windows 7 Ultimate 32 BIT (ACTIVATED). – avirk Nov 26 '12 at 16:36

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