my serial number is gone

[southbark]

I tried looking at my serial number.They replaced my logic board recently and my serial number has disappeared

 

[Eidorian]

There should be a sticker over the old serial number in the battery compartment.

 

[Mal]

Take it back to the store and ask them to reflash the logic board. There's a utility that reapplies the serial number to a logic board replacement, sometimes they come without that programmed in properly.

jW