Before you begin any of the procedures in this section, follow the safety instructions in the
Product Information Guide.
When to Use the Dell Diagnostics
If you experience a problem with your computer, perform the checks in "Lockups and Software
Problems" on page 73 and run the Dell Diagnostics before you contact Dell for technical assistance.
It is recommended that you print these procedures before you begin.
The Dell Diagnostics works only on Dell computers.
The Drivers and Utilities CD is optional and may not ship with your computer.
Start the Dell Diagnostics from either your hard drive or from the Drivers and Utilities CD.
Starting the Dell Diagnostics From Your Hard Drive
The Dell Diagnostics is located on a hidden diagnostic utility partition on your hard drive.
If your computer cannot display a screen image, contact Dell. See "Contacting Dell" on page 111.
1 Shut down the computer.
2 Connect the computer to an electrical outlet, if it is not already connected.
3 Turn on (or restart) your computer.
4 Diagnostics can be invoked one of two ways:
Turn on the computer. When the DELL™ logo appears, press <F12> immediately. Select
Diagnostics from the boot menu and press <Enter>.
If you wait too long and the operating system logo appears, continue to wait until you see the
Press and hold the <Fn> key while powering the system on.
If you see a message stating that no diagnostics utility partition has been found, run the Dell
Diagnostics from the Drivers and Utilities CD.
desktop. Then shut down your computer and try again.