Wont detect RAM

I have a dx2200 HP and it only shows 850 MB of RAM with a 1 GB stick installed. I tried to add another 1 GB stick just like the other 10 dx2200 we have, but it doesn’t detect the extra RAM. In fact the computer doesn’t even boot. I tried switching the sticks around and even using 512 in each slot and it works fine, so it isn’t the slots or ram that’s bad. Does anyone have any suggestions why this it happening?
rjackmanwynAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
First guess... Onboard Video
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dkumar82Commented:
Check the FSB speed of RAM, because if the FSB mismatch, the new RAM would recognize.
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dkumar82Commented:
Correct - Would not recognize.
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MichaelSystems EngineerCommented:
You may want to go into BIOS and check the settings for memory. Also, where you put the memory matters. Make sure you have the first stick in slot 1 then the second stick in slot two (if there are more than two)
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rjackmanwynAuthor Commented:
There are only 2 slots and the memory sticks are identical 1 GB. I bought 6 sticks for 3 computers that are all dx2200 computers. The memory works on 2, but not on this one. Also all 3 computers have onboard video.
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MichaelSystems EngineerCommented:
Have you done any updates? I'd try one of two different things as far as the video driver goes:

1. Update the driver via the manufacturer's website or

2. Uninstall the driver, reboot the machine
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BCipolloneCommented:
Hmm, may need a BIOS update.
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MichaelSystems EngineerCommented:
Both BCipollone suggested BIOS, at least reward BCipollone with points?
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rjackmanwynAuthor Commented:
Your right sorry I didn't refresh to see that. Thanks BCipollone
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BCipolloneCommented:
;) Thanks
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