Series X only turns off or goes to home screen when I try to play a game

This is a new repair issue i have not come across until now. I can use the Xbox series X doing everything except play games. I have 2 repairs, both with the same issue. I can leave them on for days at a time. Use them for any type of media. Ill watch youtube and plex, all without any issues. The very moment I pick a game, 1 turns off completely and the othe kicks you straight to home screen. I’ve cloned the drives with just the 1gig file needed and replaced the power supplies on both devices. They still both do the same thing. Has anyone encountered this yet? If so, can you help lead me in the right direction. Id much rather get them working than place them in the doner pile. Thanks in advance.