Opening Your Desktop Computer
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
CAUTION: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer’s electronic components. You can do so by touching an unpainted metal surface on the computer.
NOTICE: To avoid losing data, save and close any open files and exit any open programs before you turn off your computer.
1Shut down the operating system:
a Save and close any open files, exit any open programs, click the Start button, and then click Turn Off Computer.
b In the Turn off computer window, click Turn off.
The computer turns off after the operating system shutdown process finishes.
2Ensure that the computer and any attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, turn them off now.
3Slide the cover release latch to the left.
4Raise the cover, and pivot it toward the front of the computer.
cover latch release
security cable slot 
padlock ring 
Quick Reference Guide
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