Hello Dennis,

Thank you for posting here and I am sorry to hear about the update issue you are experiencing.

I suggest resetting your Windows 10 since you can't boot it normally, please follow the steps given below.

1. Please make sure that your PC is off.

2. Hit the power button then hold Shift key and continuously tap the F11 button.

3. On menu screen, click Troubleshoot.



4. Click Reset this PC.

5. If you want to keep your personal files and customization, click Keep my files, then click Reset. Your computer re-installs the operating system and your computer restarts. 

Additional reference: https://support.micr...

Note: This is only applicable when you can't totally use or boot-up your PC or if your PC isn’t working and it is having an issue since you installed an app, driver, or update.

I hope this helps!

If you have any other questions, please let me know.

Sincerely,

Christian