Dell XPS 720 Black Owner's Manual - Page 5

Diagnostic Lights 66 Beep Codes 69 System Messages 70 Dell Diagnostics 72 When to Use Dell Diagnostics 72 Starting Dell Diagnostics From Your Hard Drive 72 Starting Dell Diagnostics From the Drivers and Utilities Media 73 Dell Diagnostics Main Menu 74 Drivers 75 What Is a Driver 75 Identifying Drivers 75 Reinstalling Drivers and Utilities 76 Using Windows Device Driver Rollback 76 Using the Drivers and Utilities Media 76 Restoring Your Operating System 78 Using Microsoft Windows System Restore 78 Using Dell PC Restore and Dell Factory Image Restore 79 Using the Operating System Media 82 Troubleshooting Software and Hardware Problems 83 5 Removing and Installing Parts 85 Before You Begin 85 Recommended Tools 85 Preparing to Work Inside Your Computer 85 Removing the Computer Cover 86 Inside View of Your Computer 88 System Board Components 89 Memory 90 DDR2 Memory Overview 90 Addressing Memory Configurations 91 Installing Memory 92 Removing Memory 93 Contents 5