Hi all, I seriously need your help! I have a PowerBook G4 which failed me a couple of months ago. The screen would just freeze. Recently, I've managed to wipe the hard disk and wanted to do a clean install using the restore disk provided but it keeps hanging mid way (installation wouldn't complete). I thought it might a RAM problem so I changed one but the problem wouldn't go away. I downloaded Apple Hardware Test (http://www.info.apple.com/support/aht.html) for PowerBook G4 but it says the version I downloaded is not supported. Wondering why as it specifies that it is for powerbook G4! Anyone had the same problem or can help me? If it is not the Hard Disk and Ram problem, are there any diagnostic tools that you folks can recommend so that I can run it against my PowerBook G4? I have another MacBook that I bought recently and it comes with Apple Care too. I installed TechTool Deluxe in it. Anyway I can make use of this Tech Tool for my powerbook? Appreciate all kinds of solutions!