does your bios have any hardware tests in it?
and indeed, intermittent issues are the hardest to track down...
I was thinking of building a computer for my gf with that cpu, hmm.
edit: about that gpu too I believe lol..
the whole thing (tower) will run just about $1000, I'll have to hunt her down a nice keyboard/mouse combo and some speakers, and idk what she wants to do for the monitor yet, we were thinking of a 27"
that's my next investment, I didn't get a fancy tower (mid size) it all ran be about 700 (probably could have bought it all cheaper but meh ... I wanted to get someone who knows alot more to do it :p)
I've got a G15 and a razer death adder and love them both (would love to upgrade kb though) and a decent set of logitech 5.1 speakers that only ran me about $100? the only thing I need to get now is a sound card so I can use it since this mobo does NOT have support for the 5.1 ;;
If I can't figure this issue out on my own i'll have to take it to him to check out obviously (which is free at least) I'm going to tool around in the BIOS to see if I can find anything. (the motherboard is a Gigabyte Z68AP-D3 if that helps any~)