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DDR RAM : SPD device data missing or inconclusive

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June 10, 2008 12:37:20 PM

I have an Intel D915GAV MOBO with 1GB TwinMOS DDR RAM (two separate 512MB memory sticks, each with an effective speed of 400MHz). Recently I've added another TwinMOS 512MB (also with 400MHz effective speed) memory stick to the system, making a total of 1.5GB of RAM. Everything works fine except that when the system is booting it shows a message.

EDIT: Here's the message exactly as it shows:

SERIAL PRESENCE DETECT (SPD) device data missing or inconclusive.
Properly programmed SPD device data is required for reliable operation.
DDR 333MHz memory assumed at slowest timings.


I thought there was a problem with the 3rd stick since I never saw this message before when I had 1GB RAM so I removed it. But the message still didn't go away. So I tried each of the sticks one by one to identify the stick with the problem, but in vain. None of them had problems when used one by one, but whenever I put more than 1 stick into the system, that same message pops up. Now I'm really frustrated, and confused about what to do.

Is it a problem with the sticks or the MOBO? :??: 
September 28, 2009 12:33:57 AM

I have the same issue. I find this psot ona search engine.
Anonymous
a b } Memory
August 6, 2010 12:15:45 AM

I got this message after replacing my old 128M PC133 with a 256M PC133. It happened twice, once with my usb keyboard in the place i normally have it (in a usb slot on a PCI card, in which I was unable to even type on because it doesn't work until windows begins to load drivers. Second time i plugged it into the on-board usb slot, which worked for the command prompt but didnt work in the windows logon. Third time I rebooted with it in it's original slot and now it works fine. I suggest anybody having this problem who comes across this post (since it's an old post), to reboot their computer a few times. It worked for me.
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