When Windows was installed on this refurb PC, the user account name was created as "patri" instead of "Patrick". This  broke the links to ALL LINKED FILES in Windows apps!  After trying for hours to change my user file to "Patrick", Windows crashed completely.  I ended up having to pay HP tech support $60 to spend 1 1/2 hours working on a fix. All in all, the bad Windows installation cost me about 10 hours of frustration.