Laptop briefly shows apple logo then reboots

Hi,

I'm following the vanilla laptop guide, and I've created the following EFI folder. When I try to boot with it, I get an apple logo for a few seconds (no loading indicator) then the laptop just reboots. What could be a problem here?

p.s. the laptop is a 2015 model Thinkpad X1 Carbon gen 3 with an i7-5600U and a 1440p screen. Here are the specs of this model)

thanks in advance