I am working with a computer that is actually working fine but we have a System Restore point mystery. The computer had about 20 restore points but none of them worked. If a new restore point is made it works. However if you try to use it the next day it won't work.
I also notice that when I select an earlier restore point to restore to (for ex, I try to restore computer to some point yesterday), as SR goes thru its processing just before shutdown, I get the usual (?) message "SR is closing some temp files". If I get that message, all works fine. If I don't get that message, the restore fails.