You're telling me this guy has a Nvidia Gtx760 2GB + Gtx560 1GB and a 256GB SSD and it can't play BF4 on minimum? That's ridiculous.
Is this a problem with strictly BF4 or is it occurring with every game? If every game: He should check all the connections to his motherboard, check the power source, check his cooling system, make sure every component is working properly. Update every single one of his drivers and try again. If then no avail, try compatibility mode, reinstalling the game, defragmenting, getting a new processor, and ultimately giving up.
Only so much you can do haha