>Okay.  I dismantled the 840, popped out all the RAM memory and cleaned
>the tin contacts with alcohol;  did the same for the VRAM, and replaced
>the PRAM battery.  Checked and double checked all connections on the mobo
>and HDD while I was in there. 
>
>On startup, I initially got the "sad Mac" "auto-crash" sound instead of
>the Mac chime, but on the second try, it booted up normally.  I've now
>had it running for about half an hour and have restarted several times
>with no problem.  Can anyone explain why the first attempt to boot
>resulted in the "sad Mac" sound following all my dismantling?  As long as
>it was only the one time, I guess I'm out of the woods on this strange
>boot behavior.  Time will tell.  Thanks everyone!


Just a guess but it may have been corrupted PRAM settings that after 
a failed boot were cleared.
-- 
Clark Martin
Macintosh Consultant
Another designated driver on the Information Super Highway

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