Always expect to have to take the side off on arrival, especially for long journeys. Only takes 1 loose component and you'll have to tinker to find the problem. Hope you don't have to do that though. On the other hand, your build does need good cooling, which is probably what he's been having problems with. Anyway, learn from your new build so in a few years you can do it yourself. The only thing I ever check is the motherboard manual for where the case wires go (led lights, power on, restart button, speaker etc) on the motherboard. I'm sure many here don't even need to do that.