Certain programs include an option to change or repair the program itself in addition to uninstalling it. To change a program, click Change or Repair option. Archive or delete unnecessary files: Your system stores lot of unnecessary and unused files and programs which get piled up over time.
This accumulated data includes temporary files, old data files, unused files and programs, duplicate files and lot other unnecessary data. This data not only occupies precious disk space but it affects system speed and performance. Try to delete unnecessary data from your system or take backup on external drives.