Here's a hidden application that many of Windows 7 & 8 user's still lack in using. It's called the Windows Reliability history. If you having computer problems all you have to do is view what's causing Windows to crash and hopefully it will narrow down your problems.
It's in Control Panel -> All Control Panel Items -> Action Center -> Reliability Montior
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It's in Control Panel -> All Control Panel Items -> Action Center -> Reliability Montior
More Info
