No way to tell from the problems you describe. Since opening your G4 is a chore, can you move the G810 (yeah, I know it's heavy and bulky) to another computer and try it? Brian Conner -----Original Message----- From: Power Macintosh G4 List [mailto:G4 at lists.themacintoshguy.com] On Behalf Of Shelley Huston Sent: Monday, August 25, 2003 9:11 PM To: Power Macintosh G4 List Subject: [G4] Monitor madness I have a ViewSonic G810 monitor on my old AGP 450 G4 with MacOS 10.2.6. Lately and unpredictably, the monitor seems to shut itself off then come back on again - usually more than once. The screen wiggles for a bit then steadies itself. It seems to happen most frequently when first turned on or waking from sleep. Sometimes it surprises me and does it really randomly. Sometimes it will happen several times in a row. I checked the plugs and the voltage and found no problems. I haven't opened the computer because that is a chore - as much has to be moved. Anyone know if this is a monitor problem or a card problem? Suggestions? Thanks for your help. Shelley Huston, sihuston at myepath.com