Dell Xps Boot Safe Mode

rebuilt pc and now. keep my system operational.
my old Dell XPS (or should I say parent and case) had a nervous breakdown. I had to rebuild it with a new motherboard. Now I really! I would like to keep my lovely view. Vista nither my old age or xp boot up, even in safe mode. A file I can delete to reset it?
Your Vista or XP is configured to match the drivers of the motherboard before. The best thing to do would be to extract the files your hard drive by connecting it to another PC and then reinstall the operating system with the new mobo drivers, etc.