New Memory modules not being detected

milned

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Jan 25, 2007
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Hi,

I've worked through the faq at the top of the page and I can't see why my new memory modules aren't being detected.

I have a Gigabyte 8IPE775/-G motherboard which has 4 ddr slots.

I currently have 2 ddr400 512mb sticks in slots 1 and 3 running dual channel. I have just purchased 2 1gb ddr400 sticks which I intended to mount in slots 2 and 4. When I did this the extra memory wasn't detected. I tried removing all the memory and putting each of the new modules into slot 1 on their own. The computer then wouldn't boot up as the memory wasn't detected.

I have also tried putting these new sticks into my work pc which uses ddr400 ram and got exactly the same result.

I have checked the motherboard manual and apart from the maximum amount of memory being 4gb there don't seem to be any restrictions on what sort of ram i can put in except for those governing the dual channel.

As unlikely as it seems it looks like I have been sold two duff sticks of ram as far as I can tell. Does anyone have any suggestions as to anything else that could be the cause of this?

Thanks
 

nobly

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Dec 21, 2005
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Sounds like 2 bad sticks.
You can download and run memtest86 to confirm it.
I'd just RMA the stuff and get some new RAM.
Its probably bad, but trying to find out how it went bad is just a waste of time. Cuz it could have been anything.
 

milned

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Jan 25, 2007
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sorry what does rma them mean?

I downloaded memtest86 but unless i'm mistaken then it won't check ram units that aren't detected.
 

Athalus_nubie

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Dec 10, 2006
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R.M.A means Return Merchandise Authorization
Basicaly it means send them back to whoever you brought them from and get a new set.
If the RAM didnt work in two computers it almost certainly is faulty so you have to replace it.
 

milned

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Jan 25, 2007
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i get you

cheers for the advice, thought that was the case but really didn't want to look like a fool without asking some more experienced people first.
 

nobly

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Dec 21, 2005
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Maybe they shipped you ECC instead of non-ECC or something.
I assumed that the computer could see them w/ memtest86. sorry.
If they're truly not detected, your BIOS should issue the beep code for missing memory.

Yeah its a pretty straight forward RMA. Its obviously something wrong w/ the RAM since its the only part that is different from a working computer and a non-working computer. :)

It happens sometimes that you get bad parts. At least it wasn't a glitchy motherboard (that really sucked).
 

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