Dell 640M, E1405 8 Setting Up a Network. . . . . . . . . . . . . . . . . . . . . . . . . . . 71, 9 Securing Your Computer. . . . . . . . . . . . . . . . . . . . . . . . . 79, 10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

6Contents
8 Setting Up a Network. . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Physically Connecting to a Network or Broadband Modem . . . . . . . . . . 71
Network Setup Wizard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Wireless Local Area Network (WLAN) . . . . . . . . . . . . . . . . . . . . . 72
What You Need to Establish a WLAN Connection . . . . . . . . . . . . . 72
Checking Your Wireless Network Card. . . . . . . . . . . . . . . . . . . 72
Setting Up a New WLAN . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Connecting to a Wireless Local Area Network. . . . . . . . . . . . . . . 74
Enabling/Disabling the Wireless Network Card . . . . . . . . . . . . . . 75
Monitoring the Status of Wireless Network Connections Through Dell™ QuickSet
76
Mobile Broadband or Wireless Wide Area Network (WWAN). . . . . . . . . 76
What You Need to Establish a Mobile Broadband Network Connection . 76
Connecting to a Mobile Broadband Network . . . . . . . . . . . . . . . 76
Bluetooth Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Setting up your Bluetooth Connection . . . . . . . . . . . . . . . . . . . 77
Connecting to a Bluetooth Network . . . . . . . . . . . . . . . . . . . . 77
9 Securing Your Computer. . . . . . . . . . . . . . . . . . . . . . . . . 79
Security Cable Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Computer Tracking Software . . . . . . . . . . . . . . . . . . . . . . . . . . 80
If Your Computer Is Lost or Stolen . . . . . . . . . . . . . . . . . . . . . . . . 80
10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Dell Technical Update Service . . . . . . . . . . . . . . . . . . . . . . . . . 81
Dell Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
When to Use the Dell Diagnostics . . . . . . . . . . . . . . . . . . . . . 81
Starting the Dell Diagnostics From Your Hard Drive . . . . . . . . . . . . 81
Starting the Dell Diagnostics From the Drivers and Utilities CD . . . . . . 82
Dell Diagnostics Main Menu . . . . . . . . . . . . . . . . . . . . . . . . 83
Dell Support Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84