Leopard Graphics Update Problem

granthac

Registered
I am having trouble booting after installing the Leopard Graphics Update. I am running on Aluminum 15" Powerbook G4 1.67Ghz. Since I have installed the update it boots to the blue screen where it just hangs for as long as I leave it. I have been able to successfully boot in safe boot mode and that is how I am writing this now, but if I try to run disk utility everything freezes up. Does anyone have any ideas?
 
By the way my audio no longer works either. When I open the audio preferences there are no audio output devices to select. Not sure if these two problems are connected.
 
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