Yes, it's possible to damage the motherboard OR the RAM module itself.. Try using one stick at a time, in the number 1 slot first. If that doesn't work, then try one at a time in the number 2 slot. Be sure the RAM "snaps" on the end are full open when starting to push the RAM down into the slot. If none of the options work, then it's possible the motherboard is damaged.

Hope this helps.