Dell CommunityĪn easy way to identify Which key is control you display brightness, look for the key with this icon. Solved: Cannot adjust screen brightness on Dell laptop? Simple solution.
Press and the up-arrow key to increase brightness on the integrated display only (not on an external monitor). Each time you press the keys, the screen gets slightly. Press the "Fn" key and the "up-arrow" key together to increase the brightness of the laptop screen. Slide the marker toward the right to brighten it and toward the left to decrease the brightness. Finally, after nearly a year of frustration, my IT contractor told me to do the following: immediately when powering on the computer, begin tapping the Fn F2. In the search results list, touch, or click Settings (App). To increase or reduce brightness on most Dell laptops.
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