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From: Andrew Gideon on 16 Jan 2010 16:54
I think I killed a motherboard. In fact, if I'm right, I've actually
killed two. But...I'm not sure this makes sense.

I've two systems built around Supermicro P4SCI motherboards. One died a
while back. It would no longer power up, so I thought the power supply
dead. I replaced it, but that had no impact. And then I became busy...

I was just working on the second of these, upgrading it to CentOS 5. W/o
thinking about it, I installed the memory that I had added to the first
machine just before it died (are you getting the issue yet?). Suddenly,
this second system was dead.

Note that it had been running CentOS 5 successfully for a day or two.
But I had this memory just sitting here...

Removing the new memory didn't let the system work. It simply doesn't
power on all all - no fan movement, nothing. Just like the first.

Have I actually killed these boards? It had never occurred to me that
putting bad memory into a motherboard (which is the theory on which I'm
operating right now) could actually kill the motherboard.

Any thoughts, possible methods to resurrect these systems, etc. are
welcome.

Thanks...

Andrew
From: ArameFarpado on 16 Jan 2010 17:37
Em Sábado 16 Janeiro 2010 21:54, Andrew Gideon escreveu:

> I think I killed a motherboard. In fact, if I'm right, I've actually
> killed two. But...I'm not sure this makes sense.
>
> I've two systems built around Supermicro P4SCI motherboards. One died a
> while back. It would no longer power up, so I thought the power supply
> dead. I replaced it, but that had no impact. And then I became busy...
>
> I was just working on the second of these, upgrading it to CentOS 5. W/o
> thinking about it, I installed the memory that I had added to the first
> machine just before it died (are you getting the issue yet?). Suddenly,
> this second system was dead.
>
> Note that it had been running CentOS 5 successfully for a day or two.
> But I had this memory just sitting here...
>
> Removing the new memory didn't let the system work. It simply doesn't
> power on all all - no fan movement, nothing. Just like the first.
>
> Have I actually killed these boards? It had never occurred to me that
> putting bad memory into a motherboard (which is the theory on which I'm
> operating right now) could actually kill the motherboard.
>
> Any thoughts, possible methods to resurrect these systems, etc. are
> welcome.
>
> Thanks...
>
> Andrew


leave those boards desconnect from everything, remove the battery and use a
shunt to connect the two poles on the boards' battery socket... leave it
like that for a night... them try it in the next day.

if the board does not awake then that memory most likely burn something on
the board.

good luck


From: Wanna-Be Sys Admin on 16 Jan 2010 21:18
Andrew Gideon wrote:

> I think I killed a motherboard. In fact, if I'm right, I've actually
> killed two. But...I'm not sure this makes sense.
>

I've never heard of failing memory causing damage to a mother board. If
there's some physical issue with the memory and it's shorting out or
something, I suppose that's possible, but it's highly unlikely you've
damaged the board. You either need to clear the memory (maybe
resetting a jumper on the board) or some other thing to get it working
properly.
--
Not really a wanna-be, but I don't know everything.
From: Andrew Gideon on 17 Jan 2010 00:33
On Sat, 16 Jan 2010 18:18:14 -0800, Wanna-Be Sys Admin wrote:

> You either need to clear the memory (maybe resetting a jumper on the
> board) or some other thing to get it working properly.

That didn't occur to me.

The P4SCI has JBT1: a pair of metal pads that, when shorted together,
should clear CMOS. I've now tried this, but to no effect.

I've leaving this system disconnected, hoping that it might help. But
I'm not hopeful, given that clearing the CMOS did nothing.

Thanks...

Andrew
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