I dont know how to reboot my powerbook g4 without using the cd?

Your absolute best bet is to re-install the system operation system.OS 10.5 is your brts bet. then follow the instructions and answer all of the needed information. Because I live alone and my computer is never out of my personal living area, I never instal a password. But this is your choice also.

If you have the operating systems disk, you can boot from the disc, and once the setup come dump, choose password reset from the "utilities" drop down menu. Change your password, shutdown, and reboot.

you have to use a CD and look ib the tips section here on how to change password.

Use the mouse to click "down" on the icon for the CD, and then "drag" that icon to the Trash bin, and the CD will eject.

Browse to the game's web-site, and click to download the game to your computer.

You need to replace the optical drive. Go to web site of Other World Computing and order a CD/DVD super drive which will burn/play discs and even burn on dual layer discs. Cost about $80 US plus your free labor to install the thing.

Use the install discs that came with the machine. Insert the disc 1, shut down the machine, turn it back on and press and hold the option key until the DVD icon shows. Then click on the icon and then click on the right arrow. When the disc boots you need to go to the top and find the disc utility folder. Then select reset password. Then choose restart.

1. Obtain a Mac OSX install disc (buy one from apple or try Ebay) 2. Insert the disc then click on the "Install Mac OS" icon. Then click the restart button. 3. DONT INSTALL! Just click through enough of the windows to get to the regular set of choices on the menu bar. One of those choices is UTILITIES and one of the choices there is RESET PASSWORD.
Simple, but you should know that anyone with a Mac OSX install disc can gain access to your computer.

You don't need a "restore" cd.

You can just use any copy of Tiger.

Borrow one!

Hello, You can test your adapter using a voltmeter and see if the power comes in Best regards. The best is actually to test with another adapter

How often? Can you make it happen on demand?
Acquire any other USB keyboard, and plug it into a USB port on your PowerBook. Use this keyboard for a while. If you don't see the problem, then I suspect some sort of short in your keyboard cable, or perhaps a spill in the keyboard itself.
PowerBook G4 keyboards are very easily replaced, without opening up the laptop itself.