recently built a comp for a friend. runnin a q6600 and a gb ud3p mobo. i read on hear lots of people having probs with this mobo causing a reboot cycle. my friends comp is doing this as well. i tested the memory slots with trusted memory and it wont post. it does the same as if it had no memory in it. just powers on and then shuts down. i have troubleshooted everything except clearing the cmos. would that fix it or does this board just have bad dimms?