I've encountered a problem I've never had before.
Over the last couple of days, I would come home to my computer and find the screen blank and the computer unresponsive (moving mouse or pressing keys wouldn't bring the monitor out of hibernation). I would restart, and it would work fine, until being left idle again.
This morning, I encountered the same issue. However, when restarting, the computer would freeze. I then attempted a startup repair, which also froze. I then attempted a system restore, which again, froze the computer. I then attempted to reinstall windows. Again, it froze. I then attempted to reformat. Again, it froze.
Bad hard drive? Or worse?