Please forgive me if I have this in the wrong category. It seems like a wise decision to run a Low Level format on a computer before a new install. I have a computer that received a few bad physical sector readings, and the files started getting corrupted. The computer is a Dell Optiplex GX620 SSF, with Pro XP and runs hot. The fans were very noisy. A software I downloaded said the hard drive was running hot, (134%-144% F. I decided to run a Low Level Format on the Hard Drive. After running the Low Level Format the Bad Sectors were eliminated, and the fans quit being noisy. It was like the computer was new. A. Is running a Low Level Format always a good idea when putting a new "older" O/S on? B. Does a Low Level Format usually correct some physical bad sectors? C. Why would the fans run less noisy after the Low Level Format? Is the software telling the fans to run more in the BIOS, or is it in XP?