I have windows 7 and my disc drive has a capacity of 120 GB. From one day to another it tells me that my disc C is full in a red bar but I dont have many programs installed. I deleted all of my videos, games, music, pictures, etc and I was able to free up 30 GB. I ran the disk cleaner and emptied the TEMP folder and garbage can but it still shows a 70GB used. Can I get some help from the experts PLEASE!!!