pc powers down just like pulling plug, only when using ffox

December 3, 2013 at 09:37:17
Specs: Windows Vista
comp powers down, just like pulling plug only when using fire fox or chrome. Fans are good Mobo is clean, have newer 750 w psu and newer mid high end video card, temps seem fine all leads connected,
Works fine in Opera, but don't like opera, ran Malawarebytes in safe mode but didn't help.
restarts immediately just fine but starts from option screen where it says windows didn't shut down properly and gives start options. No blue screen, no error...is perplexing....

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December 3, 2013 at 10:30:45
When you said MalwareBytes "didn't help", do you mean it didn't find anything?

Firstly look in "Control Panel > Programs and features" to make sure there are no unwanted programs that arrived without you knowing.

Also, in Firefox and Chrome see if there are any weird addons - they can be temporarily disabled if you are unsure what they all are.

Also run ADWCleaner too as there could be some hidden toolbars lurking:
Get it by using the blue "Download Now @ Bleepingcomputer" button.
It doesn't install in the normal sense but instead you just download and "Save" the file.
Run it by double clicking the downloaded file, first the Scan, then the Clean. Between the two is the opportunity to see the log to find out what it found.

Always pop back and let us know the outcome - thanks

message edited by Derek

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December 3, 2013 at 11:27:55
I would power off the unit (cause this is quick). Remove all the ram modules. Make sure the dimm slots are clean and the edge of the ram that snaps into the board is clean, and push them firmly back into place, the tabs snap in. Power up the computer and in the search box begin typing memory diagnostic and it should pop up the Windows memory diagnostic utility, let it restart and run a ram test. See if the problem persists. Could be a corrupted firefox for which uninstalling and reinstalling may help, but I would check the ram. If that fails test the power supply.

To err is human but to really screw things up, you need a computer!

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