PowerBook G4 StartUp Problem

I have a PowerBook G4 titanium (year 2001) running 10.4.4 and have had no prior problems running any version of OS-X. I have been running 10.4.4 for several weeks. I use VersionTracker to keep all my software current. I turned on my PowerBook and after a long while got a deep blue screen that read something like, "You need to turn off your computer by holdin the power button...". It was in four languages. I did that, but it didn't help and the screen reappeared repeatedly. I then executed a Safe Boot by holding the shift key during start up, and booted successfully. I executed a permissions repair and also conduicted a disk verify (which was successful). I then tried to re-start normally and once again got the same screen ("You need to turn off your computer....."). Since this machine can boot from OS-9 and I had a partition for just OS-9, I did that successfully, so it isn't a catastrophe, but I am trying to figure out what the heck to do. If anyone has any advice please let me know. I have solid bootable backups that go back about a week and could go back to that and reinstall on the drive, but I'd like to fix what I have if possible. I have not as yet run TechTool Pro 10 as I am away from home but could verify volume structure (file structure is okay).
Thanks,
Barry

What you experienced is known as a kernel panic. This FAQ explains kernel panics:
http://www.macmaps.com/kernelpanic.html
You mentioned you have Techtool Pro, but didn't mention if it is version 4.0.4 or later. If it is version 4.0.3 or earlier, having used it once on a Tiger system may be the cause of your kernel panics. Only Alsoft Disk Warrior 3.0.3 may be able to repair the damage done by that. If you are able to, I'd make your backup as current as possible while booted into Mac OS 9 before using any utilities. Once that is done, determine if the cause of the kernel panic is third party hardware or drivers since it appears not to be directory related per se since your Verify Disk yielded no errors.
Disclaimer: Reference to links I make to my Macmaps.com website are a for your information only type reference. I do not get any profit from this page, and it is open to the public.

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