that should get a working OS if the machine is capable, confirming a problem setting has been removed or the original install has failed, depending on the results of the effort, and upon reinstating the original configuration (as running and shutting down a working copy of Windows should have cleared out any strange transient configuration information in the UEFI system so the original installation might actually recover). To do that you need to use diskpart /s from the command prompt of the recovery media to run a script to configure the drive with GPT for best operation under a UEFI BIOS (a process which will start by removing everything from the first drive it finds… so be clear this method is NOT A REPAIR, its start over) and then immediately run setup from the recovery drive through that command window (otherwise a long winded and flawed attempt at repair will commence) and select settings as you indicated (and don’t freak – Windows setup will sort out the drive letters and booting itself, you shouldn’t end up with Windows on a crazy drive letter and if that did happen it’s a test install anyway). The other plausible option is to obtain and fit any suitable temporary replacement boot drive you can wipe (and disconnect any non boot data drives, and double check you have achieved both of those before going further) and then to reinstall the OS in UEFI mode having restored default settings in the BIOS setup (which should be UEFI unless your rig is getting on). if you switched that on maybe turn it off again and see if the problem will resolve. The only other hint I could find was some crankiness around old UEFI BIOS implementations and the Intel VT-x implementation. If you’ve never touched those and can work out accessing the BIOS setup program, factory defaulting them from there would probably do (check the time and date while you’re in there though!). If you’ve never configured the bios We’d need to know the nature of the machine to indicate how to reset the settings.
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