Well, Windows & came pre-installed on my HP. It worked okay for the first 2 months, fast start-up and no hang-ups or freezes, but then all of a sudden it started taking maybe 2 or 3 minutes to start-up and had constant not responding messages. So at that time I decided to do a system recovery. After the system recovery and re-installing my programs, the computer responded like a new computer. Until I ran Comodo System Cleaner on the registry and the problems returned. I guess it was a bad idea to run the registry cleaner? Anyway, back to my problem, when I tried to run the repair install, it failed as I mentioned. As much as possible I do not want to have to reinstall all of my software, since I have about maybe 50 programs I will have to re-install, and for some of them, I no longer have either the disk, or the activation keys. My computer also has Bio-metric feature (finger print scan) instead of password option which I like a lot, and do not want to lose. So what do you suggest now?