Are you kidding me? A better advice couldnt you find than this crap?
He has an high end comp, and you tell him to do windows updates. lol.
He has a high end computer hence the hardware is probably not the issue, but instead software. Learn something about computers before lashing out at my free advice. Drivers and updates are #1 on the list of possibilities for causing problems on a machine that otherwise has plenty of horsepower. I run an IT company and do this stuff every day so if you dont like my advice then by all means dont take it.