Service exited with abnormal code: 1

Hello! After a lot of tries, I have successfully booted Sierra using UEFI Clover on my HP Elitebook 8460p. It only boots UEFI when I select .efi file, do I select one from CLOVER folder or from BOOT folder?

I tried with either one, and either time the boot ended with this message (verbose mode): "Service exited with abnormal code: 1".

Do you know where might be the problem? I tried Google searching with no success.