Dell d400 - Latitude - Pentium M 1.3 GHz Service Manual page 13

Using the Dell Diagnostics:
NOTE: If you do not see anything on your display, hold down the mute button
and press the power button (instead of <F12>) to begin the Dell Diagnostics.
You do not need to highlight Diagnostics and press <Enter>. The computer
automatically runs the Pre-boot System Assessment.
4. Turn on the computer. When the DELL™ logo appears, press <F12>
immediately. If you wait too long and the Microsoft® Windows® logo appears,
continue to wait until you see the Windows desktop. Then shut down your
computer and try again.
5. When the boot device list appears, highlight Diagnostics and press <Enter>.
The computer begins to run the Pre-boot System Assessment, a series of
embedded diagnostics that perform initial testing on your system board,
keyboard, hard drive, and display.
During the assessment, answer any questions that appear.
If a component failure is detected, the computer stops and beeps. To stop
the assessment and reboot to the operating system, press <N>; to
continue to the next test, press <Y>; to retest the component that failed,
press <R>.
If failures are detected during the Pre-boot System Assessment, write
down the error code(s) and contact Dell before continuing on to the Dell
Diagnostics. See the User's Guide for contact information.
If you receive a message stating that no Diagnostics utility partition has
been found, follow the instructions on the screen to run the Dell
Diagnostics from your Drivers and Utilities CD.
If the Pre-boot System Assessment completes successfully, you receive the
message Booting Dell Diagnostic Utility Partition. Press any key to
continue.
6. Press any key to start the Dell Diagnostics from the Diagnostics utility partition
on your hard drive.
7. After the Dell Diagnostics loads and the Main Menu screen appears, click the
button for the option you want.
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