Lightning strike

So I sell PC parts as a proxy I got some experience in electronic but not the kind needed so I have to ask those who know better then myself out of caution... So this guy bough Corsair RM 650 modular from me and one day he came back home and his PC wont start... half of devices in his home...

So im looking to build a gaming pc for myself, ive never done it before and have limited knowledge on compatibility and other things. So far ive decided to buy i7-4790 ram : 16G Kit 1600 (8Gx2) Kingston Fury seagate barracuda 1tb Kingston HyperX Fury 240gb ssd 4G GTX 970 Gigabyte OC power...