Hey !
So i've been trying to install ubuntu with dual boot on my computer but I've got a problem and couldn't solve it with the things I found on the internet.
So I download the .iso file and put it on a key with rufus. (I tried with GPT and MBR and none of them worked)
I partitioned 100 Gb and then the problem happened.
When I try to restart the computer to install ubuntu, it just doesn't appear, I don't know why.

I tried to change some things in the BIOS but it doesn't seem to work.
I don't know what information you need to help me so just tell me what you need to help me and I'll take the picture !
Thank you for the help !