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New RAM stick not recognised by Windows..

Posted on 2011-03-19
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Last Modified: 2012-05-11
Friend has an old HP PC running XP Pro SP3 - he added a 1GB RAM module to go with the 1GB stick already there.. same spec but not matched....

BIOS recognises it but Windows doesn't - any ideas please?
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Question by:chrisfixit
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by:g000se
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Hi,

Try relocating the RAM in another slot on the system board.  also double check to see if the computer is up to date from Microsoft updates.
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by:g000se
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Try running this tool from Crucial Memory Experts.  http://www.crucial.com/
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by:PowerEdgeTech
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What are the specs for the existing AND the new memory?
What system make/model are you working with?
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Tekyguy earned 100 total points
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What model HP is it?  Check for bios update from HP support site.  The newer ram may not be compatible with the older bios - but fixed in a newer update.  

Also, have you tried booting with just the one newer stick of RAM in the system?
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by:Don Thomson
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Some of the older PCs may only recognize 1Gig - It may have more slots available - but the total the bios will see is 1 gig -  Tekyguy is right though - check and see if HP released a newer bios that may change that - DO NOT update the bios without reading all the release notes about the various bios updates and what they do - If increasing the amount of recognized memory is not one of the update features - don't bother - There are thousands of old PC in the recycle centre that didn't like the bios update someone did  - It's doesn't alway work
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by:☠ MASQ ☠
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If your BIOS detects the RAM and Windows doesn't perhaps you have an environment setting in Windows preventing the extra GB being detected.
eg: http://support.microsoft.com/kb/108393
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by:nobus
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are you sure both sticks work at the same voltage?  
you can also run memtest, to verify if that sees it, and tests out correct - it can just be bad :  www.memtest.org
or find it on the ubcd : http://www.ultimatebootcd.com/      
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by:ded9
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I would recommend  reinstalling windows XP if the ram is getting detected in bios.

Try it


Ded9


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by:nobus
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i would like to know what was the outcome/solution
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by:chrisfixit
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Ah, well I passed on all the information that you all contributed, thanks, and he is going to buy another similar stick to the one he bought and try that.
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by:☠ MASQ ☠
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So should this be reopened & we wait to hear what fixes it before points are distributed?
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