Hey, I have been having a problem with my pc for 2 days now, it happened a few months ago aswell, when I start my PC I cant open any windows at all apart from my computer and the command prompt, i cant bring up the task manager with ctrl alt delete, i cant shutdown the pc or restart it, yesterday i had to manually restart it 6 times before it would let me use any programs. Today it did the same but after leaving it for about 20 minutes or so it started working, does anyone know a way of fixing this without formatting my hard drive? any help will be appreciated.