Create a Restore Point
The single easiest solution is to go to a restore point on your computer that is earlier than when the fonts were corrupted. This will not affect documents or pictures you have added since the restore point, but it will remove any programs you installed, and any
Windows updates installed since the restore point. Remember to reinstall the Windows updates again after you have reverted to the earlier configuration.
Go to the Control Panel → Backup and Restore Center. Click on System Restore, below Restore Files. It will ask you for permission, so give it. A new window will come up: System Restore. It will show you the last restore point the system has made. You will also see an option to choose a different restore point. Click that, and
select a point prior to when you began to have trouble with your fonts. Be sure to check the box for Show restore points older than 5 days. Select a restore point that will predate when you noticed the problems with your fonts. Click Next. Remember - you can reverse a system restore point, unless you used System Restore in Safe mode. You reverse it by opening System Restore, click on Undo System Restore, and next. Select the choice you want, and click on Finish.