How to install Ubuntu on Dell XPS 15 9750.

My laptop : Dell XPS 15 inch 9570 with Windows 10 on a board.

I was trying to  install Ubuntu ONLY (with out W10) on my Laptop  and it always  shows me a screen with "No Bootable Device Found" (see the photo below). I did burned the .ISO file to the flesh driver. Then changed BIOS setting on: Boot sequence - UEFI   |    SATA operation - AHCI   |   Secure Boot Enable - ON.

When installed the Ubuntu i choose to erase the disk and all partitions and install system. But still getting error after rebooting. Even when I tried to add a path to "Boot Option" it says "File system not found"  But before that i tried to install Ubuntu alongside with W10 (DoulBoot) and I've got same error.  My friend has Lenovo X1 carbon 14. He installed Ubuntu from the same flesh drive that i did and he succeeded. 

Now Support team tell me please what should i do to complete this installation.       Thank you.