Well I have a gigabyte ds4 with 4 gigs of Gskill ram 800, and a q6600 G0 stepping. well i got it to 3.4 no problems. the thing is when i attact my USB external harddrive to my computer, it then boots up and mid way through booting up will shut down and restart. when it restarts it goes back to 2.4 the default settings. but when the harddrive is not plugged in boot up, then the computer is totally fine starting up at 3.4. what is the deal?? its a western digital external harddrive.