06-19-2017 06:33 PM
trying to disable Secure Boot and enable legacy mode to be able to boot from USB stick.
Doing that in the BIOS but as soon as I save and reboot, Secure Boot goes back to being enabled again: the BIOS setting change does not stick.
07-04-2017 02:38 PM
when you , in the BIOS setup , have disable SecureBoot , you save the configuration and the computer automatically reboot.
After you saved , you don't have to press any keys , just wait for a message appearing on the screen asking you to type a four digit number , the press Enter.
you a video showing it : How to Enable Legacy for Windows 7
hope this helps.