My employer was getting rid of two 22" Viewsonic CRTs, so I figured I'd use one to upgrade my 19" monitor that's connected to my dual 1.8 G5. When I connect either of the 22" monitors, the G5 won't startup all the way. It just hangs on a blue screen. When it's hung, the mouse is movable, but I can hear the hard drive accessing every now and then, and the mouse disappears from the screen for about five seconds every ten or so seconds. Both monitors are operational and work fine when connected (via a VGA adaptor) to my macbook pro, and the G5 works totally fine when connected to my old 19" monitor. Here's what I've tried: zapped the PRAM (numerous times) plugged the 22" monitor into a different AC outlet (in case it was sucking too much power to allow the G5 to boot fully) swapped the video card in the G5 with an identical one from the same model G5 at work. tried a safe boot, and after a very long startup period, it exhibits the same behavior as before. I booted up from my Disk Warrior disk, and the computer booted up fine. So it's not a monitor problem, or a video card problem. As soon as I tried to boot up from the hard drive, it went back to bot fully booting. Any ideas? thanks!