My mac is a early 2009 model running 10.7 software. I realized it was running pretty slow so i decided to upgrade the ram from 2GB to 4GB. After installing it, i checked my memory and it recognizes one slot and not the other.
iMac, Mac OS X (10.7.1)
Double check the seating of the RAM.
Swap the RAM sticks to determine if it s slot or RAM issue.
Is it the correct spec RAM for your computer?
I swapped them and it showed that the other slot did not recognize it either.
Its the correct RAM for my computer, I contacted the seller and hopefully they would send me another. Thank you!
It does sound like a defective RAM stick. Hopefully a replacement will work for you.
My imac G5 only recognizes one slot after installing 2x2 GB ram
