22 System Infor mation Guidew w w . d e l l . c o m | s u p p o r t . e u r o . d e l l . c o m The Dell Diagnostics allows you to:• Perform tests on one or all devices.• Select tests based on a symptom of the problem you are having.• Choose how many times a test is run.• Suspend testing if an error is detected.• Access help information that describes the tests and devices.• Receive status messages that tell you whether tests completed successfully.• Receive error messages if problems are detected.Starting the Dell DiagnosticsIt is recommended that you print these procedures before you begin.NOTICE: Use the Dell Diagnostics to test your Dell™ computer only. Using this program withother computers can result in error messages.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.1 Shut down the computer.2 If the computer is connected to a media base (docked), undock it. See thedocumentation that came with your media base for instructions.3 Connect the computer to an electrical outlet.4 Turn on the computer. When the DELL™ logo appears, press immediately.NOTE: If you cannot see anything on your display, hold down the mute button and press thecomputer’s power button to begin the Dell Diagnostics. The computer automatically runs thePre-boot System Assessment.NOTE: If you see a message stating that no diagnostics utility partition has been found, run theDell Diagnostics from your Drivers and Utilities CD.If you wait too long and the Microsoft® Windows® logo appears, continue to wait untilyou see the Windows desktop. Then shut down your computer through the Start menuand try again.