Contents 5If the Device Screw Is Not Installed . . . . . . . . . . . . . . . 55If the Device Screw Is Installed . . . . . . . . . . . . . . . . . 56Removing and Installing Devices While the Computer Is Running 58If the Device Screw Is Not Installed . . . . . . . . . . . . . . . 58If the Device Screw Is Installed . . . . . . . . . . . . . . . . . 604 Using the Keyboard and Touch PadNumeric Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . 64Keyboard Shortcuts . . . . . . . . . . . . . . . . . . . . . . . . 65System Functions . . . . . . . . . . . . . . . . . . . . . . . . 65Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65CD or DVD Tray . . . . . . . . . . . . . . . . . . . . . . . . . 65Display Functions . . . . . . . . . . . . . . . . . . . . . . . . 65Radios (Including Wireless Networking and Bluetooth™) . . . . 65Power Management . . . . . . . . . . . . . . . . . . . . . . . 66Speaker Functions . . . . . . . . . . . . . . . . . . . . . . . 66Microsoft® Windows® Logo Key Functions . . . . . . . . . . . 66Customizing the Touch Pad . . . . . . . . . . . . . . . . . . . . . 68Touch Pad or Mouse Problems . . . . . . . . . . . . . . . . . . . 68External Keyboard Problems . . . . . . . . . . . . . . . . . . . . 68Unexpected Characters . . . . . . . . . . . . . . . . . . . . . . . 695 Using CDs, DVDs, and Other MultimediaUsing CDs and DVDs . . . . . . . . . . . . . . . . . . . . . . . . 72CD and DVD Problems . . . . . . . . . . . . . . . . . . . . . . . 72If you cannot play a CD or DVD . . . . . . . . . . . . . . . . . 72If you cannot eject the CD, CD-RW, or DVD drive tray . . . . . 72If you hear an unfamiliar scraping or grinding sound . . . . . . 73If the CD-RW drive stops writing . . . . . . . . . . . . . . . . 73