Latest Win10 update, now laptop will not boot into Windows. Blue "Choose an option" screen. CONTINUE (Exit and continue Windows Rollback) - doesn't work. USE ANOTHER OPERATING SYSTEM (Continue with another installed version of Windows) lets you choose the pre-update version, as well as the recent updat, but won't boot into either one after choosing keyboard version. TROUBLESHOOT (Reset PC or see advanced options) doesn't work either. Diagnose PC says unable to diagnose. The only thing that works is the TURN OFF YOUR PC button. Nothing gets me past this blue screen.
[Moved from: Windows / Windows 10 / Windows update, recovery, & backup]