legacy boot

[Goran84]

Hello

We have bought a number of prodesk 400 g4 mini computers.

Because we work with non standard operating system, we have to install it via USB.

I can't get the bios to accept legacy boot.

When i am in advances - secure boot configuration, I can select legacy support enabled an secure boot disable. But there is no save button only help.

When i go back and save and exit it returns to "legacy support disabled and secure boot enable"

Same as when i press f10 and save.

I already put a password on the bios, but i seem to be missing something or doing something wrong.

Any help is appreciated.

[Goran84]

Found it, the 4 digit code was not typing with the keyboard i was using.

Verry strange, i did not know the digits appeared on the screen, but once i put in the keyboard the computer came with, it worked. the digits witch i typed appeared an a other tone played. the settings where saved and i could boot in to legace usb.