For more advanced troubleshooting, access the UEFI settings on your Surface Pro 9. Once in UEFI, go to Devices, disable the Docking USB port for at least 15 seconds, and then re-enable it. This can ...
For a force shutdown, press and hold the Power button for about 30 seconds until the screen turns off. Then, press and hold the Volume-up button and the Power button simultaneously for about 15 ...