I installed an 80GB Solid State hard drive as my startup drive with only windows 7 and my basic software; browser, antivirus, etc. Software I felt important to keep as a group on startup. Obviously I did this for a quick boot and put in a second drive for all my files and other programs. I will make a shortcut for the desktop to a file I use frequently in order to keep my solid state drive clean. The problem is that my solid state drive seems to be filling up and I can't understand it since windows 7 and a few software programs along with microsoft updates cannot be filling this drive up from 40GB used space to almost full at 80GB. I have cleaned out virus in the past and used various software recommended by one of the techs on this site and sometimes when we clean it, I end up with 20GB available free space which is correct but now I keep getting filled up to the point of only 5GB or less and I can't find anything using that much space. When we have cleaned for virus before is has indirectly corrected this problem most times but I am virus free now as far as I know. I have run several tests. I am going to clone this drive to a larger one but if there is a problem I don't want to transfer it. Please help me if you have an idea what is happening.