i tried unsuccesfully yesterday to build a X2 4400 system. my first attempt was with a asus A8V deluxe motherboard that would not even turn on, no post no nothing. that was a brand new motherboard, second attempt was with a abit AV8 motherboard. it would post but would only run for few seconds and give the code F9 or 9F i can't remember which way they was displayed. long day. i tried disconnecting hardware and just booting with minimal setup but still got same error. the list of hardware used is in my signature below except for the motherboard and chip. anybody have an idea what i am doing wrong? everything i used is being used now to post this so i know the parts work. thank you in advance for any help on this.