Dell e7250 models with issues taht wasn't psoting video and it didnt work. do you have any tested bios for that model
Did you try bios abvove? Also check that https://bios-fix.com/index.php?thre...-randomly-completely-freeze.47823/#post-72729
Dell laitude e7250 computrace enabled fixed https://bios-fix.com/index.php?threads/dell-laitude-e7250-computrace-enabled.49506/#post-80639