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Windows 7: PC just shuts off with buzzing?

26 May 2012   #1

Windows 7 Ultimate x64
PC just shuts off with buzzing?

Today I was playing Football Manager 2012 and suddenly my monitor goes black, but pc is still working and every few second makes short kind of buzzing. I cant turn it off with button, only if I change the switch from back of the case.

What it could be?

My System SpecsSystem Spec
27 May 2012   #2

Windows 7 Ultimate x64

My System SpecsSystem Spec

 PC just shuts off with buzzing?

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