Troubleshooting black or blank screens in Windows
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:
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Windows logo key + P to choose a presentation or projection display mode.
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Ctrl + Alt + Del to display security options.
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For a black screen, use the following keyboard shortcut: Windows logo key + Ctrl + Shift + B.
If you have a Surface, see Surface won't turn on or start.
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