A friend gave me their computer to look at. It is really messed up, I try a repair and it won't do it says everything is ok, then at the end says "registry is corrupt". He says their is nothing really important on it so I decide to do a fresh install. Once it gets part way through it says can't update registry. Why would it say that? I formatted the drive so there is absolutely nothing on it and did a clean install. It now says "Windows could not prepare the computer to boot into the next phase of installation. To install windows restart the installation".