So i accidentaly touched a fan in the computer, which made it restart and all the icons and menu and everything dissapeared, i force shut down the pc and turned it back on, didnt help, i read some things on forums and tryed it but i was only lucky once to actually get the mouse to appear so no luck there, task manager didnt pop up only black screen, i then tryed to reinstall windows 7 and it seemed to remove the issue but after a while it came back again, please help :/