How to Fix the Brightness Function Key Not Working in Windows?

Guides March 14, 2023

Method 1:

[{"selector":"#anim-79fb734c-d31f-4b32-8967-05a61cd9b65d [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(24.883081894187875%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-516a880e-72c6-4f39-9994-37dc9df92a21","keyframes":[{"offset":0,"transform":"translate3d(0, -921.95723%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -259.254373076%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -88.139111188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -33.098264557%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -14.382532787999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1200,"duration":1500,"fill":"both"}] [{"selector":"#anim-e94a16e0-f66d-496d-be4b-34793d22bc98","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-81dab47e-abc7-4ac4-b0f5-4210e53d95f1","keyframes":{"transform":["translate3d(125.55555%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Method 2:

[{"selector":"#anim-cb65384c-20a8-4301-8827-f88996913b5b [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(-3.552713678800501e-15%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-3cacdf0f-2a66-46ee-9a18-393a342fb312","keyframes":[{"offset":0,"transform":"translate3d(0, -921.95723%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -259.254373076%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -88.139111188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -33.098264557%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -14.382532787999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1200,"duration":1500,"fill":"both"}] [{"selector":"#anim-a8af737f-2dd1-4e79-926f-a4713280bc9f","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-303478ff-8fe2-43c2-a702-49ae4e714873","keyframes":{"transform":["translate3d(125.55555%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Method 3:

[{"selector":"#anim-bd791d00-2860-4266-a294-57290377602e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(-24.967874131430463%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-d7f2f1ec-a5df-4018-9753-e52414bb422b","keyframes":[{"offset":0,"transform":"translate3d(0, -921.95723%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -259.254373076%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -88.139111188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -33.098264557%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -14.382532787999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1200,"duration":1500,"fill":"both"}] [{"selector":"#anim-6c6588a7-1476-4a72-9420-ec62f85abf8b","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b6d8b161-687f-4c18-a7c1-85cf04ba71a8","keyframes":{"transform":["translate3d(125.55555%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Method 4:

[{"selector":"#anim-201d5efd-bde1-4e1d-bec3-230d35a34de5 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(21.649950871678136%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-dfdfe8a5-8216-4525-9b1b-911bf0b32330","keyframes":[{"offset":0,"transform":"translate3d(0, -921.95723%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -259.254373076%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -88.139111188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -33.098264557%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -14.382532787999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1200,"duration":1500,"fill":"both"}] [{"selector":"#anim-1a02dbb1-f70e-43f6-b8c1-09c53dcb4f06","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8ae20b1b-79aa-4564-93d3-af7d5b00d51e","keyframes":{"transform":["translate3d(125.55555%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Method 5:

[{"selector":"#anim-24e2c185-3f22-46ea-85ac-ce76c7fd27bb [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(8.39318346911837%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-0fa8ce80-0ce7-4b19-814f-06f4ac359d4e","keyframes":[{"offset":0,"transform":"translate3d(0, -921.95723%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -259.254373076%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -88.139111188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -33.098264557%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -14.382532787999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1200,"duration":1500,"fill":"both"}] [{"selector":"#anim-bede650c-b7c9-4ee0-9e06-fffb18645ee6","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c5cc1782-38fc-4f49-8a59-5b33d92f7ada","keyframes":{"transform":["translate3d(119.52054%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Method 6:

[{"selector":"#anim-6b176017-3bd7-45a7-931b-0dc1ac9ffd0d [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(-22.416588061022118%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-f8546460-bd0d-4473-9685-fadc624cd40a","keyframes":[{"offset":0,"transform":"translate3d(0, -921.95723%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -259.254373076%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -88.139111188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -33.098264557%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -14.382532787999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1200,"duration":1500,"fill":"both"}] [{"selector":"#anim-70aa2672-a3ac-456e-93de-863b1e466548","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f84ccee4-2003-4152-b8d7-d559a1024ae8","keyframes":{"transform":["translate3d(119.52054%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Method 7:

[{"selector":"#anim-cc9f29bc-ef47-4868-b609-228f9e64da53 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(0%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-bb42fa80-7048-494d-924f-b531050d01aa","keyframes":[{"offset":0,"transform":"translate3d(0, -921.95723%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -259.254373076%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -88.139111188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -33.098264557%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -14.382532787999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1200,"duration":1500,"fill":"both"}] [{"selector":"#anim-c241afbe-b348-4d34-8e8a-9710bfefe2d0","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3abde72e-5048-40c6-b167-d599a04eb2fe","keyframes":{"transform":["translate3d(119.52054%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Method 8:

[{"selector":"#anim-a51db719-d1d6-4345-8cf3-61c08d3a28c0 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(11.251543022183304%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-9a8ba56e-a8d0-4326-8d37-3e47b057777c","keyframes":[{"offset":0,"transform":"translate3d(0, -921.95723%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -259.254373076%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -88.139111188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -33.098264557%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -14.382532787999999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":1200,"duration":1500,"fill":"both"}] [{"selector":"#anim-60c9d922-66ec-4202-8cc7-9147223146b5","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8b09e52f-ba4e-45a3-a6bc-4d125380295a","keyframes":{"transform":["translate3d(119.52054%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

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[{"selector":"#anim-61404ff5-ba9a-4cf4-98e0-5930b99ca7ef [data-leaf-element=\"true\"]","keyframes":{"transform":["translate(-18.443262100979375%, 0%) scale(1.5)","translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-06c6aa51-7046-4dc0-af9d-20e8ca40e48a","keyframes":{"opacity":[0,1]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-aa64c769-5d62-498d-a34c-0f5c696bec25","keyframes":{"transform":["translate3d(119.52054%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":1400,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Swipe up

How to Fix the Brightness Function Key Not Working in Windows?

Method 1:

Go to Windows Settings and change the brightness of the screen.

Method 2:

Use the Hardware and Devices Troubleshooter

Method 3:

Run the Keyboard Troubleshooter

Method 4:

Turn on the Microsoft Windows Generic PnP Monitor

Method 5:

Change the brightness of the screen with PowerShell

Method 6:

Make sure the Fn key is turned on.

Method 7:

Delete the Update

Method 8:

Use the Brightness Slider

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