What causes a Mac Pro 2013 to crash after boot?
I bought a Mac Pro 6,1 late 2013 trashcan as a spares/repair project and I’m starting the trouble shoot.
symptoms are that it will crash and enter reboot loop pretty much upon arriving at the desktop.
I have tackled the simple stuff: booting from a known good install; trying known working Ram ( from an identical working model); and also tearing down the machine and reseating all the connections.
Result is always the same, it manages mostly to boot all the way and then crashes soon after.
If instead of doing a full boot I press Option and hold then it looks like it will sit indefinitely on the choose a drive screen without crashing.
My guesses are that it is likely to be one of: bad psu ( as soon as a significant power draw happens maybe the voltage sags and causes reboot); the logic board at the base of the assembly or the CPU/CPU logic board.
Just wondering if any experienced trash can owners have a ‘favourite’ for what hardware defect is to blame….
[Re-Titled by Moderator]
Mac Pro, macOS 12.7
