User with Windows Vista Home Premium or Windows Vista Home Basic (regardless whether already installed with Windows Vista SP1 or Windows Vista SP2) cannot in-place upgrade to Windows 7 Professional edition. According to Windows 7 upgrade paths document or Windows 7 available upgrade paths chart, user must perform custom clean install on existing Windows Vista Home Premium or Home Basic system. When trying to in-place … Continue reading How to Upgrade from Windows Vista Home Premium or Home Basic to Windows 7 Professional