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My laptop monitor is faulty and I am planning to use it as a 'desktop'. I bought an external led monitor. But when I connect it to my laptop via HDMI, the desktop gets extended. What I really want is to turn off the display on my laptop and use the external monitor, not dual monitor. How to do this.

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Go to


Select the screen labelled laptop (or similar), select the "off" radio button and then click apply. That worked for me anyway.

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There must be a key, which pressed in combination with the Fn key, will turn off your laptop monitor. That key is usually on the function keys. What is your laptop model?

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Maybe you can use disper: see my answer to this question

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