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tabs before you disconnect the cable. As you pull connectors apart, keep them evenly aligned to avoid bending
any connector pins. Also, before you connect a cable, ensure that both connectors are correctly oriented and
aligned.
NOTE:
Disconnect all power sources before opening the computer cover or panels. After you finish working inside the
computer, replace all covers, panels, and screws before connecting to the power source.
CAUTION:
Exercise caution when handling Lithium-ion batteries in laptops. Swollen batteries should not be used
and should be replaced and disposed properly.
NOTE:
The color of your computer and certain components may appear differently than shown in this document.
Recommended tools
The procedures in this document require the following tools:
● Small flat blade screwdriver
● Phillips # 1 screwdriver
● Small plastic scribe
Turning off your computer
Turning off your computer — Windows 7
CAUTION:
To avoid losing data, save and close all open files and exit all open programs before you turn off your
computer.
1. Click Start.
2. Click Shut Down.
NOTE:
Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not
automatically turn off when you shut down your operating system, press and hold the power button for about 6 seconds
to turn them off.
Turning off your — Windows
CAUTION:
To avoid losing data, save and close all open files and exit all open programs before you turn off your
computer .
1. Click or tap
.
2. Click or tap
and then click or tap Shut down.
NOTE:
Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not
automatically turn off when you shut down your operating system, press and hold the power button for about 6 seconds
to turn them off.
After working inside your computer
CAUTION:
Leaving stray or loose screws inside your computer may severely damage your computer.
1. Replace all screws and ensure that no stray screws remain inside your computer.
2. Connect any external devices, peripherals, or cables you removed before working on your computer.
8
Working on your computer
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Troubleshooting
