03-05-2015 04:38 AM
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.
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03-05-2015 07:56 AM
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:
Let me know how it goes.