to repair JAWS
1. Copy the executable to your hard drive.
2. Open the run dialog (windows+r)
3. Paste the executable file from your hard drive into the run dialog. It should say something like quote c:\jaws17.0.221.enu.bla.bla.bla.exe quote.
4. Delete the quotes.
5. Following .exe leave a space, then type /type repair.
6. Press enter and you should be good to go.