Dell 720H2C appendix Dell Diagnostics Main Menu, Option Function, Tab Function

1.Turn on your computer.

2.Press the eject button on the front of the optical drive to open the drive tray.

3.Place the Drivers and Utilities media in the center of the drive tray, then press the eject button or gently push on the tray to close it.

4.Restart the computer.

5.When the DELL logo appears, press <F12> immediately.

NOTE: Keyboard failure may result when a key on the keyboard is held down for extended periods of time. To avoid possible keyboard failure, press and release <F12> in even intervals until the Boot Device Menu appears.

If you wait too long and the Windows logo appears, continue to wait until you see the Windows desktop, then shut down your computer and try again.

6.At the Boot Device Menu, use the up- and down-arrow keys or press the appropriate number on the keyboard to highlight Onboard or USB CD-ROM, and then press <Enter>.

NOTE: The Quickboot feature changes the boot sequence for the current boot only. Upon restart, the computer boots according to the boot sequence specified in system setup.

7.At the CD-ROM Startup Menu, use the up- and down-arrow keys or press the appropriate number on the keyboard to highlight Boot from CD-ROM, and then press <Enter>.

If you wait too long and the Windows logo appears, continue to wait until you see the Windows desktop, then shut down your computer and try again.

8.Press <1> to select the Dell Diagnostics.

9.At the Dell Diagnostics Menu, press <1> to select Dell Diagnostics (graphical user interface).

10.At the Dell Diagnostics Main Menu, left-click with the mouse, or press <Tab> and then <Enter>, to select the test you want to run (see Dell Diagnostics Main Menu).

NOTE: Write down any error codes and problem descriptions exactly as they appear and follow the instructions on the screen.

11.After all tests have completed, close the test window to return to the Dell Diagnostics Main Menu.

12.Remove the Drivers and Utilities media, then close the Main Menu window to exit Dell Diagnostics and restart the computer.

Dell Diagnostics Main Menu

The following tests can be run from the Dell Diagnostics Main Menu:

Option	Function
Express Test	Performs a quick test of system devices. The test typically takes 10 to 20 minutes and requires no interaction on your part. Run Express Test
	first to increase the possibility of tracing the problem quickly.
Extended	Performs a thorough check of system devices. The test typically takes an hour or more and periodically requires your input to answer specific
Test	questions.
Custom Test	Tests a specific device in the system and can be used to customize the tests you want to run.
Symptom	Lists a number of common symptoms and allows you to select a test based on the symptom of the problem you are having.
Tree

For any problem encountered during a test, a message appears with an error code and a description of the problem. Write down the error code and problem description exactly as it appears and follow the instructions on the screen. If you cannot resolve the problem, contact Dell (see Contacting Dell).

NOTE: The Service Tag for your computer is located at the top of each test screen. When contacting Dell support, have your Service Tag ready.

The following tabs provide additional information for tests run from the Custom Test or Symptom Tree option:

Tab	Function
Results	Displays the results of the test and any error conditions encountered.
Errors	Displays error conditions encountered, error codes, and the problem description.
Help	Describes the test and any requirements for running the test.
Configuration	Displays the hardware configuration for the selected device.