Is it still working now a few weeks later? Overcurrent protection would cut all power so you wouldn't get any post code until the trip is reset and then everything works again. The only way I could see an intermittent issue like that would be if something is literally overheating inside of the PSU.
Being water cooled you should also check to see if you have a slow leak anywhere. If liquid dropped on the wrong thing that could cause a failure that would go away when it dries.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…