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116 Troubleshooting
NOTE: If your computer cannot display a screen image, see "Contacting Dell" on
page 201.
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.
NOTE: If you wait too long and the operating system logo appears, continue to
wait until you see the Microsoft
®
Windows
®
desktop; then, shut down your
computer and try again.
– When the DELL™ logo appears, press <F12> immediately. Select
Diagnostics from the boot menu and press <Enter>.
NOTE: Before attempting the following option, the computer must be
powered down completely.
– Press and hold the <Fn> key while powering the computer on.
NOTE: If you see a message stating that no diagnostics utility partition has
been found, run the Dell Diagnostics from the Drivers and Utilities media.
The computer runs the Pre-boot System Assessment (PSA), a series of
initial tests of your system board, keyboard, display, memory, hard drive,
etc.
During the assessment, answer any questions that appear.
• If a failures are 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 (see "Contacting Dell" on
page 201).
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.
book.book Page 116 Wednesday, September 16, 2009 11:12 AM