Display Built-In Self Test Button - Dell XPS 27 Setup And Specifications

Display Built-in Self Test button

1 Press and hold the Display Built-in Self Test button.
2 Press and release the power button.
a Display Built-in Self Test button
After performing the above steps, your computer will begin to display a white
screen followed by black, red, green and blue screens.
Once the Display built-in self-test is completed, your computer will proceed to
boot.
b Power button
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