I have a White apple 2.0 ghz iMac...Running 10.4. When I boot it up, the startup icon (whirring wheel) has a red background to it. Once this has disppeared the screen changes to a random width pink and baby puke coloured stripey pattern. I've tried setting the drive up as a target disk and doing a verify and repair... No joy. Have also booted up using command-s and running fsck -fy ... No joy. Is this a problem with the graphics card? Has anyone got any ideas!!! Moff proceed with your demonstration... You may fire when ready.