Help. My hard-drive is suddenly showing and acting as full. it is a 1TB hard drive, and had approximately 600GB free before this mishap. P.S I truly feel it has something to do with CCleaner. I was wiping the free space with CCleaner, when you do that it slowly fills up the HDD until the process is complete, and then shows the free space freed up. I think this process may have been interrupted, and has caused this issue, but I am not sure. Can anyone point me in the right direction, or know the "quick fix" to this problem?