I recently purchased a new HDD and since installing it my pc has begun to randomly go blank. The screen will go black and the system will become unresponsive, so I have to turn it off and on again. It happens randomly, but when left off for a good while it will take much longer (2 hours). I have read a lot about systems getting a black screen and found that there are many possible causes to this problem although I have not encountered anyone saying it was a HDD issue. Is this a possibility? I doubt it's anything else since it worked fine before the new HDD.