Running a 64 bit Windows 10 Pro, booted fine until recent change.
Tried to boot into Test Mode in order to use unsigned drivers. System now freezes on booting, with display showing "Test Mode, Windows 10 Pro, Build 10586"
Keyboard and mouse are unresponsive, thus cannot launch, for example, Command Prompt.
On hard reboot, system re-freezes as described
Tried a variety of approaches to fix this including "Fix Startup Repair"; "Boot from previous image" etc. but nothing seems to work
Any suggestions?