Another Series X on then off

I have a friends Xbox series X that I’m trying to troubleshoot. Warranty Expired. The Xbox turns on for a second with the beep and then turns off almost immediately. I assumed there was a PS issue but the power rails seem good. After some research I found a similar issue that was fixed by cloning the original M.2 SSD to a new one. Does anyone know how I can troubleshoot the current M.2 or any other possible problems I could try to rule out?