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Advanced Troubleshooting
Dell™Dimension™3100/E310ServiceManual
Dell Diagnostics
System Lights
Diagnostic Lights
Beep Codes

Dell Diagnostics

When to Use the Dell Diagnostics

If you experience a problem with your computer, perform the checks in this section and run the Dell Diagnostics before you contact Dell for technical
assistance.
It is recommended that you print these procedures before you begin.
Start the Dell Diagnostics from either your hard drive or from the Dell Dimension ResourceCD.

Starting the Dell Diagnostics From Your Hard Drive

1. Turn on (or restart) your computer.
a. WhentheDELL™logoappears,press<F12>immediately.SelectDiagnosticsfromthebootmenuandpress<Enter>.
b. Press and hold the <Fn> key while powering the computer on.

Starting the Dell Diagnostics From the ResourceCD

1. Insert the ResourceCD.
2. Shut down and restart the computer.
When the DELL logo appears, press <F12> immediately.
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.
3. When the boot device list appears, highlight IDE CD-ROM Device and press <Enter>.
4. Select the Boot from CD-ROM option from the menu that appears and press <Enter>.
5. Type 1 to start the ResourceCD menu and press <Enter> to proceed.
6. Select Run the 32 Bit Dell Diagnostics from the numbered list. If multiple versions are listed, select the version appropriate for your computer.
7. When the Dell Diagnostics Main Menu appears, select the test you want to run.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
NOTICE: TheDellDiagnosticsworksonlyonDell™computers.
NOTE: The ResourceCD is optional and may not ship with your computer.
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.
NOTE: If you see a message stating that no diagnostics utility partition has been found, run the Dell Diagnostics from the ResourceCD.
NOTE: The next steps change the boot sequence for one time only. On the next start-up, the computer boots according to the devices specified in
system setup.