System restarts when i press shut down

For a while i have come across this annoying problem with my system.When I press the shut down button on the start menu it just restarts.Its not always but when it happens ,it continously restarts until i get pissed and just press reset and immediately press the cabinet power button when the POST screen comes.

My specs:
Athlon II X4 630
2 GB DDR2 RAM
HD 7850
500 GB SATA HDD
CM 460 W PSU
Windows 7 64

Would i need to reinstall windows for this cos it would mean a lot of app reinstalls :(
Please help me with this if anyone has come across such a weird problem


Thanks.
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More about system restarts press shut down
  1. Hi :)

    Check your Power settings....

    All the best Brett :)
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