I just finished upgrading my HP6470Z computer memory from 96 megs to 256 megs. I removed the 2 chips containing 96 megs and replaced them with 2 128 meg chips. I have doubled checked to make sure I used the correct replacement chips. Now the problem - Before the upgrade, I had 80 percent free resources, after the replacement of the chips, I only have 70 percent free resources. The computer shows 256 megs of memory installed. Nothing else has been changed, except the memory chips. Is there something else I need to do besides just change the chips?I thought I should have a lot more of free memory, not less.