Restart your computer and press or hold down the appropriate key to enter your system BIOS. However it may be F2 or F8 on some laptops and desktop systems.
Apparently they never learn and are instead busy adding features like DRM and UEFI to make our lives even more miserable.
Ensure that your flash drive is formatted as FAT32.
If it is not, you will want to right click on the drive and reformat it as FAT32. Reboot the machine and enter the BIOS by repeatedly pressing DEL.
One can also run a command in CMD to check the BIOS version.
Click on “Start Button” and press Run, once the Run box appears type system info and then press OK.