Let's check to ensure the memory is properly installed in your laptop. Before getting started, power off the laptop, remove the battery and disconnect the power from the AC outlet. 

  • Remove the memory from the memory socket(s) utilizing the lock tabs to eject the module(s).
  • Reinstall the memory, ensuring the memory-key lines up with the key-notch in the socket.
  • With thumbs on the top edges of the module, firmly push the memory into the socket and then rotate the module down into the lock tabs, locking the memory in place.