Xbox One turns off after a few seconds

Xbox One turned off during gameplay and now turns off after a few seconds on powering on. Replaced power supply with no luck. Replaced HDD with a new SSD with no luck either. Won't read USB for new OS in the few seconds its on. Power supply has solid orange light when the unit is off, will turn solid white for the few seconds that the unit is on.

Any suggestions appreciated. Thanks!

:)