Upgraded memory, but doesn't show all.

hrsetrdr

Member
Apr 13, 2002
57
2
71
Hi, I searched the General Hardware FAQ's, but didn't find the answer to this situation. I originally had 256mb of pc2100 ddr mem installed. I just added 512mb, but in System Properties, it only showed as 512mb total. I swapped boards in slot one with slot three, started Windows. Now it shows the full 768mb of ram. What could explain this?
 

John

Moderator Emeritus<br>Elite Member
Oct 9, 1999
33,944
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I have come across that problem before. It must be some sort of memory bank issue.
 

microAmp

Diamond Member
Jul 5, 2000
5,988
110
106
I would think that since the 512MB is probably double sided and read only 1/2 of it, why it worked correctly when you moved it to another bank..... maybe someone will know.
 

hrsetrdr

Member
Apr 13, 2002
57
2
71
I'm pretty sure all three mem boards were seated right...if one wasn't wouldn't the computer not load the o/s?

All three of the memory sticks were the same size & density. :confused: