It started when i was going to tab into steam overlay in l4d2 and instead i kept getting to desktop. i could not type in steam chat box, instead i opened menu buttons and enter made the ping sound that happens when you try to close a box without selecting option etc. When i try to double click i get the properties box etc. I figured i might have hit some key to enable key shortcuts or whatever so i restarted pc. I recently found a strange firewall exception, it was in chinese i think, i could not remove it from exceptions like i can everything else. Im really getting worried, its my birthday tomorrow and i really want my pc to work. Its a win 7 ultimate 64 bit. Im siting at the floor atm because i have only 1 internet cable so i have to shift it. NEED HELP!