I have a Quadra 840AV that I found one day on my way home from work. I
brought it home, hooked it up to my monitor and keyboard, and found it
worked just fine. I decided to do a few upgrades on it by adding memory
and filling the vram slots. Since then I can not get it to start up
again. When I try to start it, I get no chime, just a blank gray screen
with the cursor in the upper left hand corner.
Here's a list of what I've tried to remedy the problem with no results:
I removed all of the upgrades I added except for one simm that I know is
good. No go.
I tried starting up from a system floppy. No go. Just the blank gray
screen with the cursor that won't move.
I tried starting up from an original Quadra 840AV system CD. See above.
I replaced the PRAM battery with a brand new one. No good even after I
have left it without a battery overnight.
I tried zapping the PRAM.
I have checked all of my cables numerous times, and all seem to be
seated solidly.
I have no external SCSI items connected to the machine.

Right now my biggest fear is that I may have damaged the motherboard
with static, even though I was very careful.
But I must admit I had one hell of a time getting everything aligned
properly each time I put the motherboard back. Is this something other
Quadra 840AV owners have experienced? Is there anything I can do to fix


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