Computer shuts down, blue screen error

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I'm running Windows 7 and my pc recently began shutting down frequenlty on it's own. Before it shuts down, I have a blue screen with white lettering that has mentioned something about Memory, but it flashes so quickly I can't read the whole thing. I have gone through the steps for malware in the Virus Forum and they directed me here because despite a clean PC, I continue to have the shut down issue. 

Any idea?

Please help.

Thanks!

I didn't find the right solution from the Internet.

References www.bleepingcomputer.com/forums/t/506754/computer-shuts-down-blue-screen-error/

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