Hello anons, I was needing to fix my cousin's computer, it always gives a black screen, but in one hour it opened the EFI SHELL screen and I was stupid enough to turn off the laptop at the exact moment and now I don't know how to recover this screen, it was exactly out of nowhere that it appeared. The computer is the premium positive XS3210, if anyone can help me please, I will be grateful in advance. I just wanted to know how to get into EFI SHELL, because after many attempts to turn off the black screen and appear on the laptop, I still don't know if it is the F2 or ESC key that opens this screen that appeared, because with this screen I was only discovered after I turned off, through it you can boot the USB flash drive and install Windows