Good day! I'm Raniel, a Microsoft user like you. I understand your frustration regarding this issue and I'll do my best to help.
Just to clarify, did you make any changes to your machine before encountering this issue?
Kindly double-check if your machine doesn't have any pending security patches: Go to Start > Settings > Update & Security > Windows Update > Check for Updates.
Once done, perform a clean boot and see if you'll encounter the same issue: https://support.microsoft.com/help/929135/how-t...
If that didn't work, kindly enable the "built-in" administrator account to isolate the issue:
- On your search bar, type command prompt and select "run as administrator"
- On the command prompt window, type
net user administrator /active:yesand press Enter - Reboot your machine, then login to your admin account, and check if you'll encounter the same issue.
Note: If you don't encounter the issue on the built-in administrator account, I suggest that you create a new user account (go through the steps under "My computer is in a workgroup") . Please refer to this article as a guide: https://support.microsoft.com/help/14039/window...
However, if the issue persist, kindly perform a repair install of your Windows which fixes the broken system files on your machine.
- Download the media creation tool here: https://www.microsoft.com/software-download/win... (click on "Download tool now") and wait for the download to finish
- Temporarily disable your firewall/antivirus, then open the tool and select the option "Upgrade this PC now".
- Wait until your machine goes to the process of repair install. There should be no worries in performing it since you will select the option to keep your files during the process.
I hope this helps. Good luck!