Computer will not boot up please help

I have a PowerBook G4 and when I try to turn it on it gives me this message that says "you need to restart your computer. Hold down the power button" The I hold it down to restart and it just brings me to the same screen. can any one help on this. thanks

Are there multi-language words on the screen? If so, you're having a kernel panic.
Kernel panics are usually caused by a hardware problem – frequently RAM, a USB device or a Firewire device. What external devices do you have connected? When trying to troubleshoot problems, disconnect all external devices except your monitor, keyboard and mouse. Do you experience the same problems?
Have you recently added RAM?
May be a solution on one of these links.
Mac OS X Kernel Panic FAQ
Mac OS X Kernel Panic FAQ
Resolving Kernel Panics
Avoiding and eliminating Kernel panics
12-Step Program to Isolate Freezes and/or Kernel Panics
 Cheers, Tom
(='.'=)
(")_(")

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