My computer has been freezing constantly, at seemingly random intervals. Often times, it will freeze when closing a tab, window, or program. Since the problem has started, I have replaced the video card, memory, power supply, and motherboard. Can someone tell me what the issue could be? A computer repair shop recently tested the hard drives, and I was told they were fine (I'm not very confident in their expertise, though).
Any help would be greatly appreciated - I can't begin to describe how frustrating this is.