I usually don't recommend this, but MAYBE he should just get himself an OEM system...?
AFAIK CPUs are usually to be installed by "professional personnel" which he clearly isn't.
I'm surprised his shop gave him warranty the 2nd time round ...
Maybe that chap is someone who should stick to the systems that Dell, Compaq, IBM & all that lot build. It's a no-brainer, but some ppl just better keep their hands away from PC's

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Either that, or he's got the most amazing streak of bad luck.
As to putting FHS into a fridge => ROFL. Well done matey - with any luck you managed to introduce WATER (condensation) to your system. Congratulations - Water + Electricity == fried hardware

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