Before you Begin 91Before You BeginTurn Off Your Computer and Connected DevicesCAUTION: To avoid losing data, save and close all open files and exit all openprograms before you turn off your computer.1 Save and close all open files and exit all open programs.2 Click Start and click Shut Down.Microsoft Windows shuts down and then the computer turns off.NOTE: If you are using a different operating system, see the documentation ofyour operating system for shut-down instructions.3 Disconnect your computer and all attached devices from their electricaloutlets.4 Disconnect all telephone cables, network cables, and attached devicesfrom your computer.5 Press and hold the power button, while the computer is unplugged, toground the system board.Safety InstructionsUse the following safety guidelines to protect your computer from potentialdamage and ensure your personal safety.WARNING: Before working inside your computer, read the safety informationthat shipped with your computer. For additional safety best practices information,see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.CAUTION: To avoid damaging the computer, ensure that the work surface is flatand clean.CAUTION: To avoid damaging the components and cards, handle them by theiredges and avoid touching pins and contacts.WARNING: Disconnect all power sources before opening the computer cover orpanels. After you finish working inside the computer, replace all covers, panels,and screws before connecting to the power source.Spyder_OM_Book.book Page 9 Monday, January 16, 2012 11:02 AM