Hello all,

Here is the case:

A friend of mine had a linux Ubuntu installed on his laptop, when he proceed to install Gnome on it, something went wrong et he can't boot anymore.
After countless attemps to recover, it was decided to start from scratch again.

The problem is that the laptop can't seems to keep the bios settings we're trying to set (secure boot is on even if we disable it for example).
The battery is still plugged to the laptop, some settings like date & time are still ok.

But when I try to boot on a usb key with a french Win10 on it, I have the error message "no nootable device - restart system".

I've try the usb key on an another computer, it's working and I can install.

Do you have any ideas ?