Screen Brightness Not Changing
Screen Brightness Not Working in Windows? Please follow simple steps to fix screen brightness not working in Windows 8.1, 8 and 7. If not working, then follow this solution https://www.wiknix.com. Also, i cannot use the function keys to change brightness but the brightness bar in power options lets me change the brightness. Just that i have to shut the lid and reopen the lid(the screen should swithoff/refresh for it to work).
Sounds like the problem is your brightness settings. Try the following, it should help.1. Go into 'Control Panel' and then 'Power Options'.2. Click the 'Change plan settings' link next to which ever plan you are currently using and then click 'Change advance power settings'.3. In this new window click 'Display' to open up the listings under it.4. Now locate and click each of the following.' Display brightness', 'Dimmed display brightness' and'Enable adaptive brightness'.5.
Change each of these to the settings you wish, then click the 'Apply' button and finally the 'OK' button.6. You should be good. This might happen due to a driver malfunction.
Screen Brightness Not Changing Lenovo
In my case, Windows was using a driver from TeamViewer Foundation (checked on Driver Details) in each of my 2 screens.To solve it, I had to Uninstall (checking the option to delete the driver) twice for each screen (uninstall, uninstall, rescan, uninstall, uninstall, rescan). After that, Windows was back using it's own driver and the brightness adjustment was back.Sometimes, when Windows install a major update, the TeamViewer driver comes back and I have to do all this again.