Dell Inspiron 1520 Owner's Manual page 108

Starting the Dell Diagnostics From Your Hard Drive
The Dell Diagnostics is located on a hidden diagnostic utility partition on
your hard drive.
NOTE:
If your computer cannot display a screen image, contact Dell (see
"Contacting Dell" on page 192).
NOTE:
If the computer is connected to a docking device (docked), undock it.
See the documentation that came with your docking device for instructions.
1 Ensure that the computer is connected to an electrical outlet that is
known to be working properly.
2 Turn on (or restart) your computer.
3 Start the Dell Diagnostics in one of the following two ways:
When the DELL™ logo appears, press <F12> immediately.
a
Select Diagnostics from the boot menu, and then press <Enter>.
NOTE:
to wait until you see the Microsoft
computer and try again.
NOTE:
completely.
Press and hold the <Fn> key while powering the computer on.
b
NOTE:
been found, run the Dell Diagnostics from your Drivers and Utilities media.
The computer runs the Pre-boot System Assessment, a series of initial
tests of your system board, keyboard, hard drive, and display.
• During the assessment, answer any questions that appear.
• If a failure is detected, the computer stops and beeps. To stop the
assessment and restart the computer, 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.
If the Pre-boot System Assessment completes successfully, you receive the
message Booting Dell Diagnostic Utility Partition.
Press any key to continue.
4 Press any key to start the Dell Diagnostics from the diagnostics utility
partition on your hard drive.
108
Troubleshooting
If you wait too long and the operating system logo appears, continue
Before attempting option B, the computer must be powered down
If you see a message stating that no diagnostics utility partition has
® ®
Windows desktop, then shut down your