Before working inside yourcomputerNOTE: The images in this document may differ from your computerdepending on the configuration you ordered.Before you begin1 Save and close all open files and exit all open applications.2 Shut down your computer. Click Start → Power → Shut down.NOTE: If you are using a different operating system, see thedocumentation of your operating system for shut-down instructions.3 Disconnect your computer and all attached devices from their electrical outlets.4 Disconnect all attached network devices and peripherals, such as keyboard,mouse, and monitor from your computer.5 Remove any media card and optical disc from your computer, if applicable.Safety instructionsUse the following safety guidelines to protect your computer from potential damageand ensure your personal safety.WARNING: Before working inside your computer, read the safetyinformation that shipped with your computer. For more safety bestpractices, see the Regulatory Compliance home page at www.dell.com/regulatory_compliance.WARNING: Disconnect all power sources before opening the computercover or panels. After you finish working inside the computer, replace allcovers, panels, and screws before connecting to the electrical outlet.CAUTION: To avoid damaging the computer, ensure that the work surface isflat and clean.8
