Windows 7 froze for no apparent reason, and ctrl+alt+del wouldn't work. I turned off the power and reset it, but then, upon attempting to log in, it froze during the "welcome, loading" screen that's displayed after entering ones password. Booting it in safe mode works. I have no idea what could be wrong with it or what to do. Any assistance would be GREATLY appreciated! I'm running Windows 7 Home Premium 64bit on a Gateway nv79, with an i3 processor, etc, if any of that is pertinent.