Hi ,
Try starting Windows while holding down the Shift key to enter recovery mode (WinRE). Select Troubleshoot > Select "Try to uninstall the update you installed." If this fails, select "Safe Mode." See if it will boot.
Now, if you want to boot from the USB flash drive, disable Secure Boot in the BIOS, save it, access the BIOS again, and change the order of the USB flash drive.
Give feedback if the information was useful or not.
Thanks