my unsolicited advice if people get upset is to just not take it personally, most of the time it's not about you it's just about them and the issue they are having, sometimes it sucks when you've been trying to fix an issue for a long time and someone tells you to turn it on and off again
it's good to cover your bases before going into any more complex stuff to ensure that all the usual solutions have been exhausted before you tell them to disassemble the whole thing and to weld a fan to the side