I can't adjust the brightness in Windows 10 Home

Good day, tenforumers!

I have a problem in my Windows 10 Home desktop. I can't adjust the brightness. The FN and down-arrow or up-down keys don't working. I've tried all methods on the Internet but none of them was successful.

Specs :

System Spec
Computer type:
Laptop
System Manufacturer/Model Number:
TOSHIBA SATELLITE L850D-138
OS:
Windows 10 Home
CPU:
AMD A8-4500 M Trinity 32nm Technology
Motherboard:
AMD PLCSC8 (Socket FT1)
Memory:
DD3 4096 MB
Graphics Card(s):
ATI AMD Radeon HD 7640G

Thanks in advance
& God bless you !

Hello, is the brightness function the only fn function that is not working or are none of the fn functions working?

Bellow is a list of methods that might work for you.

• Did you enable the fn functions in the bios? (BIOS -> Advanced -> System configuration -> function buttons)
• Did you install the Toshiba Function Key Utility driver from the Toshiba support website.

I had a bit of trouble with finding the support page for your Toshiba Satellite, I found the L850D-12P and the L850D-12Q but not the L850D-138.
You can also change the brightness by pressing the [Win] and [X] button and then selecting Mobility Center.

I see, let's continue with the troubleshooting, did the brightness control work at one point or did it never work for you?

• Let's try adaptive brightness. (Configuration Screen -> System -> Power & Sleep -> Additional Power Settings -> Change advanced power settings -> Display -> Adaptive brightness -> Enable -> Reboot) You can also change the brightness there.
• Make sure that you have the last available graphics driver installed that is listed on the drivers page for your specific Satellite notebook.
• Microsoft happen to break the brightness control with updates in the past but also send out updates to solve it again, is your Satellite netbook up-to-date with the Microsoft Updates?

Good luck, I hope that any the above methods are helpful for you.

Jordy19 said:

I see, let's continue with the troubleshooting, did the brightness control work at one point or did it never work for you?

• Let's try adaptive brightness. (Configuration Screen -> System -> Power & Sleep -> Additional Power Settings -> Change advanced power settings -> Display -> Adaptive brightness -> Enable -> Reboot) You can also change the brightness there.
• Make sure that you have the last available graphics driver installed that is listed on the drivers page for your specific Satellite notebook.
• Microsoft happen to break the brightness control with updates in the past but also send out updates to solve it again, is your Satellite netbook up-to-date with the Microsoft Updates?

Good luck, I hope that any the above methods are helpful for you.

It was working good at one point, but after it goes crazy.

I've enabled "Adaptive brightness" but it still doesn't working
My Microsoft Updates and drivers are up-to-date.

@dalchina, @Bree

Sorry, but your tips can't help myself. I will going with my laptop to an expert.

asimpleman said:

@dalchina, @Bree

Sorry, but your tips can't help myself. I will going with my laptop to an expert.

Please tell us what the issue was if the laptop got fixed, I'm curious in what it might be.

Jordy19 said:

Please tell us what the issue was if the laptop got fixed, I'm curious in what it might be.

Ok, I will let know yourself. My mom will going with it to an expert.