Try going into the bios and disabling secure boot. Also disable boot from the internal SSD.
"2) Create a UEFI bootable USB memory stick" can be done using Rufus.
Hi,
tried to find the secure boot option but I cant find it in the bios. I have no Windows computer and not using Rufus, but I dont think its the problem because it is booting from the usb stick and starts the installer, but then it fails. Name of the stick is "WINPE".
Do I need to prepare any partition for the installer to run successfully?