Dell OptiPlex 390 Owners Manual - Page 9

After Working Inside Your Computer, Turn Off Computer - no network connection

Page 9 highlights

Click Start , then click the arrow in the lower-right corner of the Start menu as shown below, and then click Shut Down. • In Windows XP: Click Start → Turn Off Computer → Turn Off . The computer turns off after the operating system shutdown process is complete. 2. 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 After you complete any replacement procedure, ensure you connect any external devices, cards, and cables before turning on your computer. 1. Replace the cover. CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into the computer. 2. Connect any telephone or network cables to your computer. 3. Connect your computer and all attached devices to their electrical outlets. 4. Turn on your computer. 5. Verify that the computer works correctly by running the Dell Diagnostics. 9

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Click
Start
, then click the arrow in the lower-right corner of the
Start
menu as shown below, and then click
Shut Down
.
In Windows XP:
Click
Start
Turn Off Computer
Turn Off
. The computer turns off
after the operating system shutdown process is complete.
2.
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
After you complete any replacement procedure, ensure you connect any
external devices, cards, and cables before turning on your computer.
1.
Replace the cover.
CAUTION: To connect a network cable, first plug the cable into the network device
and then plug it into the computer.
2.
Connect any telephone or network cables to your computer.
3.
Connect your computer and all attached devices to their electrical outlets.
4.
Turn on your computer.
5.
Verify that the computer works correctly by running the Dell Diagnostics.
9