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What's DOS?
Posts: 1
Registered: ‎01-17-2018
Location: IN
Views: 1,801
Message 1 of 5

Legion Y520 - F4, F7,and F8 key does not work

When I initially booted my Lenovo Legion Y520 , pressing F1 F2 F3 work fine for volume controls with a UI prompt for the function.

Pressing F4 toggled the mic mute with a UI prompt.

F5 could be used to refresh a webpage.

F6 toggled the use of the touchpad, but did not show a UI prompt.

F7 toggled airplane mode with UI prompt.

F8 toggled camera function with UI prompt.

F9 locks fine.

F10 works fine too.

F11 F12 toggles brightness with UI prompt.


I don't know what happened along the way, but now F4 (mic), F7 (airplane mode), F8 (camera) stopped working. Nothing happens when I press the buttons. I'm running Windows 10 Home, version 1709, OS Build 16299.192.


Maybe someone can help me in restoring the functions of those buttons? And additionally, maybe add a UI prompt for F6 (touchpad)?



Moderator comment: Model added to subject for clarity.

Retired Moderator
Retired Moderator
Posts: 13,719
Registered: ‎12-07-2009
Location: CZ
Views: 1,768
Message 2 of 5

Re: F4, F7,and F8 key does not work

For the old system ( Idepad Y series) it was related to Power ( Energy ) Management drivers. You can try to re-install it
Posts: 5
Registered: ‎02-15-2018
Location: AU
Views: 1,582
Message 3 of 5

Re: F4, F7,and F8 key does not work

I had the same problem my F4, F7 and F8 buttons were not working all of the sudden, I think they stopped working when I updated the BIOS.  I searched for a solution but I nothing worked until I noticed that my Lenovo Utility app was gone or got unninstalled somehow, so I installed it back up again & it promted me to restart the pc, when I restarted my pc nothing hapenned, so I checked task manager under startup programs & Lenovo Utility was on disabled so I enabled it & restarted my pc once more & it worked because all the buttons are now working fine.

What's DOS?
Posts: 1
Registered: ‎09-08-2018
Location: IN
Views: 1,037
Message 4 of 5

Re: F4, F7,and F8 key does not work

Thanks for solution. I had same problem since last once month and i was unable to find soltion. And your solution worked for me perfectly.
What's DOS?
Posts: 1
Registered: ‎09-16-2018
Location: US
Views: 960
Message 5 of 5

Re: F4, F7,and F8 key does not work

Thank you for your comment. I disabled my Lenovo Utility App Smiley Sad. But now I fixed it. Thank you

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