Upgrade stuck at Choose your keyboard layout screen

To Fix the issue you need to boot from an installation media to Access Advanced options. If you don’t have then Create Windows 10 Installation media or Bootable USB using media Creation Tool. When you Ready with installation Media (DVD / Bootable USB) plug it in your device which is facing the problem and reboot the device. Press Any key to boot from installation media, Skip the first screen and on the next screen click on Repair your computer.

Select Troubleshoot -> Advanced options And click on the command prompt.

This should open advanced command prompt Where you can perform the Command below to repair the Master boot record file, and rebuild the Boot Configuration Data And check The Disk Drive Errors.

bootrec /fixmbr

bootrec /fixboot

bootrec /rebuildbcd

bcdboot c:\windows /s c:

chkdsk c: /f

Once done with the above commands, restart your computer and check The upgrade proceed where you left. Or if you still get stuck at the Choose your keyboard layout screen The only way left for you is Get back to the previous version. To Do this Again Access Windows 10 Advanced options, click on Go Back to the Previous Build option And follow on-screen instructions.

Also, use the Official Windows Upgrade Assistant or Media creation Tool For smooth And Error Free Upgrade process. I hope this time you get succeed to Upgrade Windows 10 April 2021 update Version 21H1. If the problem is still not fixed Then it may be A update bug causing the issue, Or incompatible drivers installed on the previous windows version which may be causing the issue. We recommend Well prepare your System before upgrade or Wait few more days to let windows 10 version 21H1 to receive few more updates and became more stable OS.