I recently purchased an upgrade for the memory of my HP Pavilion g6-1187sa. I used a crucial scan to ensure my laptop was compatible and they guaranteed it would work. I have tried everything to get it to work, but nothing is working. After looking at the HP website, they say the maximum memory is 4gb. However, crucial said the maximum was 8gb (2x4gb). There are also two slots for memory and only 1 is being used. Why would they make two slots if you can only have 1?