Dell Inspiron 14R 5420 Owner's Manual

Also see for Inspiron 14R 5420: Manual Quick start guide Quick start guide Specifications

Contents

Dell Inspiron 14R 5420 Owner's Manual Manual pdf 9 page image

Before You Begin | 91 Before 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 electrical outlets.4 Disconnect all telephone cables, network cables, and attached devices from yourcomputer.5 Press and hold the power button for 5 seconds, after the computer is unplugged, toground the system board.Safety InstructionsUse the following safety guidelines to protect your computer from potential damage andensure your personal safety.WARNING: Before working inside your computer, read the safety informationthat shipped with your computer. For additional safety best practicesinformation, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.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.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.CAUTION: Only a certified service technician is authorized to remove thecomputer cover and access any of the components inside the computer. See thesafety instructions for complete information about safety precautions, workinginside your computer, and protecting against electrostatic discharge.CAUTION: Before touching anything inside your computer, ground yourself bytouching an unpainted metal surface, such as the metal at the back of thecomputer. While you work, periodically touch an unpainted metal surface todissipate static electricity, which could harm internal components.