Hello, i recently received a used powerbook g4 for Christmas. It worked great for about a month or two but now it crashes a lot. Also i have a problem with the keyboard and the tracpad not working sometime. They just don't respond, so i have to hold the power button for 10 seconds to turn it off. Occasionally it does work but if i start using to many programs it the keyboard and tracpad stop working. I'm new to mac so I'm not to sure what is going on or what to do. Any help would be greatly appreciated.