Some computers require IDENTICAL pairs. These often have 4 slots, and they are colored in pairs. You would have to check the manual from your manufacturer. (check that website).
If you have only two slots, then you can probably Mix and Match.
You see, you do not know if the New memory works in your computer. So try that by itself first. If it does not work, the TAKE IT BACK. But it should not matter if the original is in slot 1 or slot 2. It was probably installed in slot 1.
You might look up your system at http://www.coastmemory.com
2006-10-10 05:46:36
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answer #1
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answered by Anonymous
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There are two things involved here. First make absolutely sure that your Motherboard can actually support a total of 768 MB of RAM. Most old motherboard cannot support this.
The best option to solve this issue would be a Motherboard BIOS update.
Second, make sure that your Operating System has the capacity to see all of the total 768 MB of RAM.
Also make sure that both the RAM sticks are similar in speed and kind. Seat them securely in their slots.
It does not really matter how you install the RAM stick and in which slot you install it in.
2006-10-10 05:55:22
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answer #2
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answered by ArnieSchivaSchangaran 4
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Well.....in this case it seems to be an older mobo on ur PC and old memory is not compatible with the new one. Also could be a mobo with ddr1 and ddr2 slots too. In this case u cannot mix the 2 types of memory . Or first memory is ddr1 266 mhz and new one is ddr1 400 mhz. some mother boards cant recognize both mem same time.
2006-10-10 05:45:43
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answer #3
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answered by PC Doctor 5
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Try putting the new card in slot 2. Keep the old card in slot 1. If this does not work, just use the newer stick.
2006-10-10 05:57:25
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answer #4
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answered by John C. 4
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the 1st slot is the one that is closest to the processor. if it doesnt work right in that slot move them around sometimes they work where they are not supposed to. if you try it in all slots and still have the same results then something might be wrong with it. also maybe they are not compatible with eachother. good luck
2006-10-10 05:49:11
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answer #5
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answered by ian6868 5
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it doesn't matter which slot you use for the 512mb stick.
if it's only registering 512mb and not 768mb, then the other stick (256mb) might be bad...
by any chance, you're not using RDRAM, are you? because if you are, then you do need identical pairs (same amount of memory)
the other thing is that if your system in kind of old, it might only take up to 512mb of ram and nothing more...check your manual...
2006-10-10 05:43:51
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answer #6
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answered by Chris™ 5
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Your motherboard could be too old to support that much RAM, you have a bad stick of ram or you didn't insert it completely.
2006-10-10 05:46:58
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answer #7
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answered by Anonymous
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this site might help
http://www.cyberwalker.com/faqs/how-tos/ram-upgrade-faqs.html
2006-10-10 05:47:04
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answer #8
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answered by cosmiciceblast77 2
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