Hi, good day!
When was the last time it worked properly?
I recommend reporting the issue via Feedback Hub app to notify Microsoft.
Please try to return to the login screen
While holding the Left Shift key, click the Power icon at the bottom right > Restart
This will bring you to Windows Recovery Environment
Select Troubleshoot > Advanced Options > Uninstall Updates
Uninstall latest quality update
If this doesn't work, Select Troubleshoot > Advanced Options > System Restore
Select the restore point at an earlier date where everything is still working.
Click Next then Finish
If the issue is fixed by performing these steps, please try pausing updates for 1 - 2 weeks until Microsoft releases a fix.
I look forward to receiving your update and I'm willing to collaborate with you till we resolve the issue. Do keep me informed.