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Recognizing Memory Chips

Posted on 2002-05-07
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Last Modified: 2010-04-25
The mother board “beeps” (errors) when the memory chip is in the DIMM 1 slot. So I’m forced to use slots DIMM 2 & DIMM 3, but the computer is only recognizing one 256MB Ram. I have 2 (two) - 256MB RAM and would like to use both.

Both 256MB RAM are working fine in my other computer.

Can you tell me the problem?

Is the mother board DIMM 1 slot bad? (it is only a month old!)

Can the mother board only recognize slot’s DIMM 2 & DIMM 3 if slot DIMM 1 is filled?
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Question by:wcguerra
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by:oldgreyguy
ID: 6995400
depending on how the manufacturer configured the memory, you may only have the availability of 3 banks of memory (modules can have memory on one side of the substrate, or both sides... 1 bank, 2 bank) So, you can have one double-sided and a single-sided module, or 3 single sided modules

do your modules have chips on both sides?
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by:slink9
ID: 6996114
Are they the same speed?
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by:magarity
ID: 6997316
I don't suppose this is any particular brand and model of computer, is it?

Can we assume this computer can accept 356MB modules in the first place?  Not all can.  Furthermore, even if it can use that size, it is not uncommon that it might only be able to use only one.  Consumer Dells are especially picky when installing large capacity memory modules.
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by:slink9
ID: 6997343
Hey Magarity, watch those fingers!  Do you have any 356M DIMMs in your computer?
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by:magarity
ID: 6997347
I just might; you can never tell what I'll be up to next.
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by:slink9
ID: 6997437
Is that sort of like doubling the memory in an old XT by soldering chips on top of the memory chips already there?  I believe that brought some machines up to a whopping 128K!!
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Author Comment

by:wcguerra
ID: 6997931
Turns out that the chip was faulty! A replacement 256 is working fine. Thanks to all.
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by:DanRollins
ID: 7086695
Hi wcguerra,
You've requested to delete this question, but its status has remained as 'Pending Delete' because one or more comments have been added.  Normally, the only way to fully delete such a Question is to post a message to Community Support and ask for assistance.

EE is making a one-time database sweep to purge the Pending Delete Questions automatically.  During this sweep:

    wcguerra -- To allow the deletion to proceed:  Do nothing.
    EXPERTS -- Please DON'T POST a comment except to contest this deletion.

In the future, please refer to http://www.experts-exchange.com/jsp/cmtyHelpDesk.jsp#8 for instruction on deleting questions.

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Author Comment

by:wcguerra
ID: 7089244
Turns out that the chip was faulty! A replacement 256 is working fine. Thanks to all.
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Moondancer earned 0 total points
ID: 7107206
Thank you for adding the solution you found.  I have refunded your 50 points to you and rather than deleting this moved it to our PAQ to close it, since it may help others in the future with similar problem.
Moondancer - EE Moderator
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