Dell Inspiron 15 (N5040, Mid 2011) - Manual (Page 9)

Before You Begin 9
1
Before You Begin
This manual provides procedures for removing and installing components in
your computer. Before you begin any procedure in this book, ensure that:
• You have performed the steps in "Turning Off Your Computer" on page 9
and "Before Working Inside Your Computer" on page 10.
• You have read the safety information that shipped with your computer.
• A component can be replaced or—if purchased separately—installed by
performing the removal procedure in the reverse order.
Recommended Tools
The procedures in this document may require the following tools:
• Small flat-blade screwdriver
• Phillips screwdriver
• Plastic scribe
• BIOS executable update program available at
support.dell.com
Turning Off Your Computer
CAUTION: To avoid losing data, save and close all open files and exit all open
programs before you turn off your computer.
1 Save and close all open files and exit all open programs.
2 Click Start
and then click Shut Down.
The computer turns off after the operating system shutdown process is
completed.
3 Ensure that the computer is turned off. If your computer did not
automatically turn off when you shut down the operating system, press
and hold the power button until the computer turns off.