My G4 freezes after a couple of key strokes HELP!!

Does anyone have any suggestions. I use the Digi001 system with a 733 G4. When i turn my G4 on sometimes it boots and sometimes the screen just goes and stays grey. When it does boot up if i open a session after a few seconds it freezes and the computer has to be restarted. The computer also freezes when i open any other program like disk doctor or toast or whatever. Help Please!!! -Tom

Re: My G4 freezes after a couple of key strokes HE 

Have you: rebuilt the desktop? Zapped the PRAM? Run Disc First Aid? run the Hardware test? If so, what were your results. If not, please do so, and if your rpoblems persist, come back, or go to the Apple website discussion boards for more answers.