They know how to undo as well. I would be guessing unless you were current on backups and did a full restore to when it worked.
I was signing into my university word account so I could actually have a licenced word to use. As soon as I signed in a pop-up came up, and asked if the university could make changes to my PC. I stupidly said yes. Now I cant even use task manager, or put my computer in sleep mode. It is ridiculous. How do I fix this?