Begin unscrewing the two screws on either side of the Processor Airflow Shroud. You may have to fit the screwdriver into the screw from a slight angle.

Because the screws are "captive screws," they are attached to the Processor Airflow Shroud and won't fall out onto your system board.

As you unscrew the second screw, you may hear the Processor Airflow Shroud creak as it is released. This is normal.