Hey, I just recently built a new system using P4P865 SE Asus Board, P4 3.0 ghz, 512 pc3200 pmi ram, Samsung 160 gig hd, and a Geforce 6800 AGP version. I have an older CRT monitor, which i've tested to know it works on other compus. My problem is this: When I attempt to run the system, the no signal to monitor warning appears on the monitor screen, and horizontal green lines roll down the screen. I've checked every connection/ thing that I can possibly think of, and the card, or at least the fan on the card is definately running, My only guess as of this point is a faulty AGP slot The slot is a 4x/8x 1.5/.8 volt only. And if i remember correctly a card that's a 3.3 will not fit in a 1.5 or .8 slot, so I'm assuming they're compatible. Any Ideas? thanks.