i got this error and i've read around here and other forums for a solution. this seems to be the most reliable one: http://www.help2go.com/Tutorials/Windows/C:\windows\system32\config\system_missing_or_corrupt.html here's the deal - i don't have the windows install disc. my brother built this pc for me a few years back and i can't get a hold of him. any assistance from anyone would be greatly appreciated. thanks in advance.