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I've tried booting with the TV cable already connected I've tried manually lowering the display resolution on the laptop to 1280x720 before duplicating the display. The TV's native resolution is 1280x720 the laptop's native resolution is 1600x900. I have a Lenovo W520 laptop running Windows 7, connected to the TV using a DisplayPort-to-HDMI converter cable. Manufacturers can enable alternate modes like DisplayPort, Thunderbolt 3, or HDMI that can transmit both video and audio signals using the same cable. I can get it to display on the TV by hitting Win+P and choosing "projector only", but then I can't see what I'm doing on the laptop screen. USB-C (with DisplayPort or Thunderbolt 3) USB-C, also known as USB Type-C is a connector type. Using the Win+P key combination (or Fn+F7 on my Lenovo laptop), I can choose to duplicate the display - but when I do this, it ends up only displaying on the laptop. When I connect the cable to the TV, the display extends rather than duplicating. The display resolution would decrease automatically to be compatible with the TV. Right-clicking that icon you should be able to get to something like 'display settings', where you should find an option for cloning your display, or dual-display, or something like that. Until today, my laptop display has been duplicating to the TV automatically when I connect the TV cable to the laptop. 4 Answers Sorted by: 11 You should have an icon in the lower right of your screen (taskbar) related to your graphics in your computer (Nvidia, Intel, etc.). We have a large TV at work - I connect my laptop to it to share my screen during meetings.
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