Hello, I experienced sonething quite similar with my G4 AGP, the workaround was: 1) rest the pram (at startup hold apple, alt, P, R keys and wait for 4 chime) 2) boot into openfirmware (at startup hold: apple, alt, O, F keys.) 3) type "set-defaults" 4) type "mac-boot" Do not leave the system boot into normal operation between steps 1 and 2. Hope this helps. -- Marc Maderi G4 500/1280MB/SCSI Powerdomain 39160 (twice), 2930CU, 358 GB.