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5 Posts

07-18-2021

Switzerland

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Not able to brighten the screen with hot keys

2021-07-18, 15:17 PM

As of lately, while pressing shortcuts Fn+F5 and Fn+F6 the screen gets only darker on my Lenovo Legion Y540-15IRH on Windows 10. Normally, Fn+F5 darkens the screen, while Fn+F6 brightens it.

After clicking this combination by habit too many times, the screen turns black and the only way to restore the screen's brightness is to restart the system.

How to fix it?

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3722 Posts

04-23-2019

United States of America

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Re:Not able to brighten the screen with hot keys

2021-07-19, 13:44 PM

Hello @Jan_Dab,

 

Welcome to the Community Forums.

 

Kindly try updating the display drivers of your machine. Some users have noted that this fixes the problem.

You can download it using this link (please note that you may have to enter your serial number in order to get the right file): https://pcsupport.lenovo.com/uk/en/products/laptops-and-netbooks/legion-series/legion-y540-15irh/downloads/driver-list/component?name=Graphics%20Processing%20Units%20%28GPU%29%20and%20Server-AI%20Accelerators


Hope this helps.
Regards,
Jack_Lenovo1



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5 Posts

07-18-2021

Switzerland

4 Signins

15 Page Views

  • Posts: 5
  • Registered: ‎07-18-2021
  • Location: Switzerland
  • Views: 15
  • Message 3 of 5

Re:Not able to brighten the screen with hot keys

2021-07-20, 11:29 AM
Hello, I have installed "NVIDIA VGA Driver for Windows 10 (64-bit) - Legion Y540-15IRH" as you had suggested, but unfortunately it has not fixed the issue.
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5 Posts

07-18-2021

Switzerland

4 Signins

15 Page Views

  • Posts: 5
  • Registered: ‎07-18-2021
  • Location: Switzerland
  • Views: 15
  • Message 4 of 5

Re:Not able to brighten the screen with hot keys

2021-07-22, 9:19 AM

Since yesterday, the same happens with the volume down shortcut. I cannot turn down the music or any sounds with the keyboard. It is possible only manually. Help! What is happening?

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5 Posts

07-18-2021

Switzerland

4 Signins

15 Page Views

  • Posts: 5
  • Registered: ‎07-18-2021
  • Location: Switzerland
  • Views: 15
  • Message 5 of 5

Re:Not able to brighten the screen with hot keys

2021-07-22, 9:34 AM

So what I realised now:

Fn+F1 = working, muting

Fn+F2 = not working(should mute)

Fn+F3 = working, sound louder

Fn+F4 = changed, brightness darken (instead of mute microphone)

Fn+F5 = working, brightness darken

Fn+F6 = changed, brightness darken (instead of brightness up)

Fn+F7 = working, screen sharing options

Fn+F8 = changed, brightness darken (instead of flight mode)

Fn+F9 = working, settings

Fn+F10 = changed, brightness darken (instead of camera off)

Fn+F11 = changed, brightness darken (instead of touchpad off)

Fn+F12 = changed, brightness darken (instead of insert)

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