Adding Parts 71
Replacing the Computer Cover
 CAUTION: Before you begin any of the procedures in this section, 
follow the safety instructions on page 7.
 NOTICE: To disconnect a network cable, first unplug the cable from your 
computer and then unplug it from the network jack.
1
Turn off the computer and devices, and disconnect them from their 
electrical outlets.
2 Briefly press the power button.
Pressing the power button when the computer is not connected to an 
electrical outlet discharges residual electricity and can help prevent 
system board damage.
3 Make sure that all cables are connected. Fold cables out of the way.
4 Make sure that no tools or extra parts (like screws) are left inside the 
computer.
5 From the back of the computer, slide the cover forward until it locks 
into place.
6 Tighten the thumbscrew on the back of the computer (see page 42).