If you experience a black or blank screen on your Windows device, try the following:
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To wake the screen, use one of the following keyboard shortcuts: Windows logo key + P or Ctrl + Alt + Del.
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For a black screen, use the following keyboard shortcut: Windows logo key+ Ctrl + Shift + B.
For more info, see Troubleshoot black screen or blank screen errors.
If you have a Surface, seeSurface wont turn on or wake from sleep.