Most likely this is caused by a recent Windows update that has corrupted your Windows system files, because you cannot access the settings app, many of the available troubleshooting steps will not be available to you.
Start your PC, just as Windows attempts to load (spinning dots), press and hold Power Button for 5 - 10 seconds to perform a Hard Shut Down
Do this twice
On the third start Windows will boot into the Recovery Environment and from there you can access System Repair, Safe Mode, Command Prompt... etc.
Please try each option one at a time, then see if what resolves the problem.
1
If there is an available option to uninstall the latest update, that may be the best oiption.2
2
Go to Troubleshoot - Advanced Option - System Restore
Check to see if you have a restore point you can go back to