No, not really V. It was quite sensible advice, the Ram had come loose due to it being handled during the move and being stored in various positions. We also gave it a good vacuuming inside whilst we were at it. PCs do attract a huge amount of dust.
I recall years ago buying a computer which clearly had a faulty motherboard and getting the run around by their telephone "helpline" - "reboot" "reset" all that. However Dave is indeed an IT expert, that's his job. He used to do all the IT work for where Julian worked and they became friends... so even though they have both moved on he's always happy to help us and we pay him if he has to come to the house as we have quite a complicated network set up at home with servers etc.