"Secure Boot" is also called "Restricted Boot" by those who do not wish for Microsoft to rule what their computers are allowed to boot.
0:00 enter the BIOS
0:29 this is how you can disable TPM and updates
0:54 Disable Secure Boot
2:04 boot order and installation media
3:34 install your OS here
5:54 follow the instructions and remove installation media
6:16 reconfigure boot order again if necessary, depends on your OS how the boot order should be.
Warning depending on the OS the boot order at the end may be different, and this configuration shown in the video may not work for you, make sure you enter the correct boot order for your OS of choosing if required to do so manually.
MP4 file
ripped from youtube, video id TCdX8ALOZUw