Hello Serg008, "ASRock Crashless BIOS" does not recover with above methods. I flashed Bios Chip with "Flashrom" . 2nd Modded Bios works!! #2_Asrock H270M-ITX ac_2.50_Dell24_.rar thanks
Thank you very much! everything works, the next day was to self-register. RW-Everything report "SLICv.....DELL PE_SC3 . ..AMI....." Thank you!