Ok, so I'm lost here. My PC used to randomly shut down or lock up. I was told it could be a hard drive issue or a bad PSU. So I bought a Corsair 650W PSU and a new HDD. Now, I'm gaming, and I lost signal to my monitor after my game completely froze...this happened right before my old PSU blew out and ruined my computer. And it's happening again...what's going on?