Brightness Function not working on Windows 10

[ajipw7]

Hello,

so i want to ask, 

 

My Laptop is Gigabyte sabre 15 P45G with i7-7700HQ , 8GB of RAM , IHD 630 and GTX 1050

Running Windows 10 version 1709 build 16299.402

 

On Windows, fn + F8 (Brightness down) and fn + F9 (Brightness Up) is not working , but on Linux (Manjaro) is working fine.

Is This Windows Issue ?

Brightness can change with Action Center or brightness button on battery icon

 

 

Any Function key is working , like Mute , Volume Up , Volume Down etc

 

i have try like installing old driver, uninstall driver to microsoft display basic and then install IHD driver still not working.

 

My friend have that laptop, but Brightness function is working fine and then windows is updating and now the brightness is not working anymore. 

 

 

Thanks before.

[Lenovo1984]

Do you have all the proper keyboard drivers installed? Do you see a little indicator (it would be in the top left) that would suggest that it's attempting to change the brightness? What happens when you try to change brightness through the Action Center?

[ajipw7]

Just now, Lenovo1984 said:

Do you have all the proper keyboard drivers installed? Do you see a little indicator (it would be in the top left) that would suggest that it's attempting to change the brightness? What happens when you try to change brightness through the Action Center?

No, I don't see brightness indicator, but my brightness can change with action center. 

[Lenovo1984]

11 minutes ago, ajipw7 said:

No, I don't see brightness indicator, but my brightness can change with action center. 

Have you reinstalled your keyboard driver? My laptops have done something like this before without the proper driver installed. 

[ajipw7]

Just now, Lenovo1984 said:

Have you reinstalled your keyboard driver? My laptops have done something like this before without the proper driver installed. 

I have installed keyboard driver and try reinstalling, but still, not working.

[Lenovo1984]

2 minutes ago, ajipw7 said:

I have installed keyboard driver and try reinstalling, but still, not working.

Perhaps a fresh installation of Windows would help? I'm not sure if you're up to it though. 

[ajipw7]

Just now, Lenovo1984 said:

Perhaps a fresh installation of Windows would help? I'm not sure if you're up to it though. 

I have 3 times reinstall, and this is fresh install

[Lenovo1984]

Just now, ajipw7 said:

I have 3 times reinstall, and this is fresh install

Hmm, now I'm not too sure. 

[ajipw7]

but I have not tried to downgrade to Windows 8.1

[Lenovo1984]

1 minute ago, ajipw7 said:

but I have not tried to downgrade to Windows 8.1

You won't be able to properly do that with your CPU. Kaby Lake and Coffee Lake CPUs aren't properly supported by Microsoft for Windows 7 and 8/8.1.