Have your son go to System Preferences --> Universal Access and click on the big button Switch to Black on White. Then go down to the bottom of that preference and switch OFF Allow Universal Access Shortcuts - but then he probably won't make that mistake again anyway. Tuck On Wednesday, August 20, 2003, at 02:45 PM, Jim Robertson wrote: > My son has a 450 MHz Sawtooth G4 with the standard AGP video card > (Rage 128 > Pro). Yesterday his monitor image suddenly inverted (looks like a b/w > or > color negative, depending on how he sets preferences for the monitor). -- Tuckerman Moss • The Old Vicarage • West Anstey • United Kingdom --