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diplomat7
Paper Tape
Posts: 2
Registered: ‎03-05-2015
Location: United Kingdom
Views: 6,630
Message 1 of 5

B50-70 Screen brightness locked and cannot adjust

I have had my b50-70 windows 8.1  laptop for 2 months. A few days ag the screen brightness locked and I am now unable to adjust when I press f11/f12. I have tried adjusting screen brightness through the control panel but it made no difference. Please advise.

Social Support Agent
Social Support Agent
Posts: 5,822
Registered: ‎02-11-2012
Location: PH
Views: 6,619
Message 2 of 5

Re: B50-70 Screen brightness locked and cannot adjust

hi diplomat7,

 

Welcome to the Forums.

 

Your problem might be similar to this article

 

Can you try the following:

1. Install the Default Brightness Level Patch, reboot the machine and observe if you can now adjust the brightness via the F11/F12 keys

 

2. If same problem, open the Device Manager > Display Adapters and uninstall the graphics driver (Intel or AMD) and ensure you put a check on Delete the driver software for this device. When finished, navigate to Control Panel (Ivon Views) > Programs and Features and uninstall the Display Driver then reboot. 

 

After the machine has restarted, reinstall the graphics from the B50-70 drivers page or from one of the links below:

 

Intel VGA Driver for Windows 8.1 (64-bit)

AMD VGA Driver for Windows 8.1 (64-bit)

 

 

Let me know how it goes.

 

Regards



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diplomat7
Paper Tape
Posts: 2
Registered: ‎03-05-2015
Location: United Kingdom
Views: 6,616
Message 3 of 5

Re: B50-70 Screen brightness locked and cannot adjust

I installed the default brightness level patch and then restarted the laptop and it has sorted the problem. Thanks for your help.

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pauline1028
What's DOS?
Posts: 2
Registered: ‎12-10-2016
Location: PH
Views: 3,224
Message 4 of 5

Re: B50-70 Screen brightness locked and cannot adjust

I did not see intel or amd under Display Adapters. Only Microsoft Display Adapter was there. Don't know what to do next.

pauline1028
What's DOS?
Posts: 2
Registered: ‎12-10-2016
Location: PH
Views: 3,224
Message 5 of 5

Re: B50-70 Screen brightness locked and cannot adjust

There's also no Display Drivers on Program and Features..

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