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UEFI does not recognize USB Boot drive
Hi. I am trying to re-install Windows 10 (Version not sure) from USB flash drive on Lenovo Ideapad 100s. The boot drive was configured with MS Media Creation Tool. I can enter UEFI/BIOS with the Novu button in the Boot Option Menu but the flash drive is not recognized under EFI Boot Devices sub menu. I have disabled Secure Boot in the Setup menu as suggested on another website but to no avail. When I select EFI USB Device sub menu under the Boot Option Menu the boot drive is accessed and installation commences to the first screen but as soon as the installation starts the keyboard is disabled. I have tried using a USB keyboard - no success.
BitLocker locked my notebook and I can't locate the key ....... looked evrywhere.....I think.
Any suggestion would be appreciated.