Hello, Steve... I own two MD G4s, both running Tiger. The other day, I thought that I would have to get rid of one when it refused to start up. But, I kept my cool and just put a new battery in it and pressed the CUDA button and it fixed everything. I have learned that one needs to keep an eye on their clock. When it starts fluctuating, its time to put in a new battery. This works on PCs as well. Be well, and do good work. Kathi A. Is anyone still on the list? I haven't seen a post in months! I would still like to participate. Thanks, Steve