Not to repeat the long discussions but let's get to the files.
In another admin capable account TAKE OWNWERSHIP of the other user's files. Google VISTA TAKE OWNERSHIP and use the article you like.
Also, Microsoft and others have yet to create a tool to fix corrupt profiles. Microsoft continues with the same advice which is to create a new account and copy the users files to the new account. Here's an EXAMPLE article -> http://support.microsoft.com/kb/811151
You can research this more on google with VISTA CORRUPT PROFILE.
I tried to login to my user account by clicking on my user icon and was told "THE USER PROFILE SERVICE FAILED TO LOGIN. USER PROFILE CANNOT BE LOADED" Does anyone know why it's shut me out and how can I fix it so I can gain access to my stuff? FYI, I was able to login using either my "Wifes" login or "Guest" but not mine? It was working just fine ealier today? Again, any help?