[Ti] Constant freezing....

[Jeffrey K. Lew]

>Well here's my problem...
>Everything way fine until I was running on battery tonight.  I 
>hadn't had any problems, had constant uptimes of 2 weeks all the 
>time.  Then, my machine freezes.  Just a dead freeze.  I restart. 
>After a while, it freezes again.  I restart.  it freezes a third 
>time.  And then, I can't boot up.  The startup chime plays, but the 
>screen doesn't turn on.  When it doesn't this, I can't zap the pram. 
>I take a break for a while, come back and I reset the PMU.  It 
>starts up!! Woo!  Then a little later, it freezes again.  And again. 
>And again.  I take it back home, and put my other battery in it, but 
>it still has the same issues.  Once it gets bad, I HAVE to reset to 
>the PMU to get it going again.  I plug it in, thinking it was 
>something to do with running on battery, but the same issues are 
>still occurring.  I took out my airport card and my non-apple RAM, 
>same results.  I ran fsck and it found some stuff, but it didn't fix 
>the problem.  Maybe I'll try some other utilities, but I figured I'd 
>see if anyone on the list could help first.  I'm really flustered at 
>this point.  I don't know why it keeps happening.  It just comes to 
>a dead freeze and I have to restart.
>
>Powerbook 400, bought in may 2001.  384mb of RAM, 48GB travelstar 
>hard drive, 10.2.3.
>
>Benn
>
>

Have you tried booting up in OS 9? Perhaps there's a problem with RAM 
or cache memory on the main logic board. You'll get an error message 
when you boot into OS 9 that you don't get when booting into OS X.

Jeff Lew
UCLA Atmospheric Sciences