Thanks for reaching out. My name is, Zadee. I'm an Independent Advisor and a Microsoft user like you. I'll be glad to help you today.
If there were no changes done and the issue just suddenly happened, I would check the Restore Point in the computer. This just saves you time as this allows your computer to go back to a point in time where the issue has not happened yet. If you can do it in normal mode follow this:
-Win + R to open run box
-Type: rstrui <Enter>
-Select the restore point date prior to the day the issue occurred
-Hit NEXT, then FINISH
-Wait for the restoration to finish
If you cannot do it in normal mode. Go to the advanced startup options in Settings > Update & security > Recovery > Advanced Startup > Restart. (You can do this in safe mode)
Once you're in WinRe, go to Troubleshoot > Adv options > System restore > Select the oldest restore point > Hit Next > Finish > Wait for the process to finish.
Best Regards,