IncompleteBoot

Hi, I recently built my own computer and have been having a repeating problem. Occasionally (not all the time) when I boot my computer everything seems normal until just before the windows log in there is a flash and the screen goes black. I have taken the computer apart and put it back together but the problem remains. Is it a problem with software, hardware or even the monitor? I have tried as much as I can and haven't found any online information about this specific problem. If you have any suggestions or need more information on specs please reply, thanks.
 
The Western Digital green series hard drives have a high failure rate. It is the weak link in your specs
 
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