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what OS are you running on?
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How can a fix the issue with a Dell Precision laptop not having the option for Duplicate in Screen Resolution settings when I connect it with HDMI cable?<br />
<br />
Only laptop screen or projector works .. NOT both<br />
<br />
??<br />
Thanks,
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How can a fix the issue with a Dell Precision laptop not having the option for Duplicate in Screen Resolution settings when I connect it with HDMI cable?

Only laptop screen or projector works .. NOT both

??
Thanks,

Laptop/Projector

A laptop or notebook is a portable personal computer with a clamshell form factor, suitable for mobile use. Although originally there was a distinction between laptops and notebooks, the former being bigger and heavier than the latter, there is often no longer any difference. Laptops are commonly used in a variety of settings, such as at work, in education, and for personal multimedia. A laptop combines the components, inputs, outputs and capabilities of a desktop computer, including the display screen, speakers, a keyboard, and pointing devices (such as a touchpad or trackpad) into a single unit. The device can be powered either from a rechargeable battery or by mains electricity from an AC adapter.

Laptops Notebooks

A monitor or a display is an electronic visual display for computers, usually comprised of the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) thin panel, while older monitors used a cathode ray tube (CRT) about as deep as the screen size. They are connected to the computer via VGA, DVI, DisplayPort, Thunderbolt, LVDS or other proprietary connectors and signals.

Displays / Monitors

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Hardware

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Dell is in Enterprise, Home Office and Consumer sectors of the market, supplying a broad range of customizable desktops, laptops, notebooks, servers, storage, and network devices.