Can't click anything from the computer

Hello, anyone can help me, cuz i had been reading the forum, it's the same problem i have now, can't access to most of the file not even internet, can't click, i only can use default system on the computer and go in-www.firefox.com but can't click anything from the computer. even i did the safe mode but didn't let me restore--no restore point.
please help cuz i don't want to re-install win7, i have a lot of stuff to load if i have 2, please help
thank you