Step 1: Reboot your computer
Step 2: As the computer is booting up, repeatedly press the F12 key until it shows the boot options.
Step 3: Using the arrow keys, highlight "Diagnostics" and hit enter to open Dell Diagnostics.
Step 4: The Diagnostics test should now begin automatically testing the hardware on your computer.
Step 5: Early on in the test it will show a color test and you'll have to press 'Y' to continue from there. The hardware test should continue to run.
Step 6: Once the Diagnostic test is finished running, it may ask if you want to run an extended memory test. You'll want to select "No" here.
Step 7: Your results should now be displayed. If any errors are shown, please notify the Help Desk.