Hi Folks, I've have a problem with my G5 Intel Core Duo iMac. It's a graphics issue. See attachment. Initially, the Apple logo appeared upside down and appeared where it shouldn't. I'm seeing artifacts on the screen where there should be none. It's reached a stage where I couldn't even boot into the OS - it would just hang. I'm about to wipe and install Snow Leopard and I'm just wondering whether this is a hardware problem, or whether a reinstall will fix the problem? Cheers! S.