Turning Off Your Computer; After Working Inside Your Computer - Dell OptiPlex 780 Ultra Small Form Factor Service Manual

Small flat-blade screwdriver
Phillips screwdriver
Small plastic scribe
Flash BIOS update program media

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. Shut down the operating system:
In Windows Vista®:
Click Start
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 (see
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. See
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, then click the arrow in the lower-right corner of the Start menu as shown below, and then
Removing the Cover).
Dell Diagnostics.