Hi. I used the windows repair tool on my old XP, and it went wonderfully. It fixed the 9 pre-scan errors, I ran the repair tool, and the computer is running very nicely. I didn't have as good an experience on my Vista. The situations going into the repairs were 1) NO pre-scan errors, 2) 12kb bad sectors on the disk (nothing new), 3) sfc shows some irreparable items (nothing new). My experience after running the repair tool is that Vista booted up VERY fast, which was nice. The problem, though, is that immediately after boot-up, the computer would freeze. After many forced shutdowns and reboots, it became apparent that this wouldn't go away, so I had to resort to system restore. I had to try a few different restore points to get the computer to work properly again. For the record, my computer has been freezing about once a day for 6 months.
It was SO disappointing that the computer became non-functional after such a wonderfully fast boot-up, and after the repair tool worked so well on my XP. I'm afraid to try it again, but I thought I should post in case this is a familiar problem with an easy resolution. Many thanks...