Hi Katie300491,

If you do not have an external monitor to test the display with, you can test the LCD in the System Setup (BIOS). If the same issue is observed on the system setup screen, it is not an issue with the drivers or Operating System.

To enter the computer BIOS Setup Screen perform the following steps:

At the first text on the screen or when the Dell logo appears, tap <F2> until the message Entering Setup appears.

Run the Laptop Built-In Self-Test (BIST). To run the Built-In Self-Test perform the following:

  • Turn the computer off.
  • Press and hold the D key while pressing the power button. This will start the BIST.
  • The screen will display multiple flashing colors. Look for lines, distortion, or any other video issues you have observed.
  • The laptop will restart when the test is finished

You can also click on this link to troubleshoot display issues on your laptop:

Please keep us posted on the results for further assistance.

Thanks & regards,
Babita S
To know more about Dell Product Support, Drivers & Downloads, Order & Dispatch status -> choose your region ->
US Customers; UK Customers; India Customers. For Dell support videos click Here

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