Before Working Inside Your Computer; Before You Begin; Safety Instructions - Dell Inspiron 15-7558 Service Manual

Before working inside your
computer
NOTE: The images in this document may differ from your computer
depending on the configuration you ordered.

Before you begin

1 Save and close all open files and exit all open applications.
2 Shut down your computer.
The shut-down instruction varies depending on the operating system installed on
your computer.
– Windows 10: Click Start →
– Windows 8.1: On the Start screen, Click the power icon
– Windows 7: Click Start → Shut down.
NOTE: If you are using a different operating system, see the
documentation of your operating system for shut-down instructions.
3 Disconnect your computer and all attached devices from their electrical outlets.
4 Disconnect all cables such as telephone cables and network cables, from your
computer.
5 Disconnect all attached devices and peripherals, such as keyboard, mouse, and
monitor, from your computer.
6 Remove any media card and optical disc from your computer, if applicable.
7 Close the display and turn the computer over.

Safety instructions

Use the following safety guidelines to protect your computer from potential damage
and ensure your personal safety.
8
Power → Shut down.
→ Shut down.