4. Remove the wireless card as shown.Figure16. Removing the wireless card5. Connect the wireless card cable to the new wireless card.6. Install the new wireless card.7. Reinstall the power button board. See “Replacing the power button board” on page 30.What to do next:• To work with another piece of hardware, go to the appropriate section.• To complete the installation or replacement, go to “Completing the parts replacement” on page 47.Replacing the system board shield and the storage drive board shieldAttention: Do not open your computer or attempt any repair before reading and understanding the Chapter1 “Read this first: Important safety information” on page 1 .To replace the system board shield and storage drive board shield, do the following:1. Remove all media from the drives and turn off all connected devices and the computer. Then,disconnect all power cords from electrical outlets and all cables that are connected to the computer.2. Remove the computer covers. See “Removing the computer covers” on page 23.3. Remove the I/O board shield. See “Replacing the I/O board shield” on page 26.4. Remove the power button board. See “Replacing the power button board” on page 30.5. Remove the wireless card. See “Replacing the wireless card” on page 30.Chapter 7. Installing or replacing hardware 31