Windows 10 - Windows built-in repair and cleanup tools - Part 1
The first tool to get to know, is Windows Restore. This will enable you to go back to a time before your problem happened. The program takes you back to how Windows was at a time of your choosing. It does not affect any personal files: documents, photos and music etc. Here is a link explaining System Restore, the most important part, is to make sure that you have System Restore turned on: https://www.howtogeek.com/howto/windows-vista/using-windows-vista-system-restore/
Links to other tools: https://www.scooploop.com/thread/windows-10-links-to-built-in-tools-posts