Computer turns on one second then turns off. Tried 2 of the same motherboards with the same chip (brand new). Tried 2 different power supplies, one new, one old and same results. The fans spin and the motherboard lights up. Tried placing the motherboard on cardboard and booting it that way, still same issue. Tried with ram in and ram out, same issue. i5 8400 chip with B250M-DS3H. Every part is brand new.