boot to uefi

Hi, I want to try Android x86 but I have to disable secure boot to make a dual boot. The problem is if I disable secure boot the surface doesn't turn on. If I re-enable secure boot the surface starts with no problems. I've tried a lot of time. Is there something more I have to do? Thanks

Hey :) I wanted to install linux on SP4, but it doesn't seem to recognise any usb! I tried it with a usb which have a windows image in, but still it doesn't work. A point is that, my TPM and secure boot are disabled but when i try to enable them, they can not be change! Seems that you can't...