My computer operating system is WIN7 64 flagship version, for a long time, my Acer 4750 fn+ around the key cannot adjust the display brightness, has confirmed the installation of all Acer recommended drivers, including the Launchmanager program, Because the suspicion is the cause of graphics drivers, and even downloaded Intel's update, but has not been resolved. fn+ sound key (up and down) can adjust the sound size, the screen will also show the relevant icons, the other FN keys are normal, only this fn+ brightness adjustment no, no effect. Today, after careful study of the driver, found that the "monitor" is displayed under the Pnp-monitor, view its driver details, the manufacturer is "Teamviewer ...", it is strange, it is how to install the Teamviewer driver? Then I thought about it, maybe when I installed the Teamview, I replaced the default driver of the display. So try to uninstall it, it must be noted that when uninstalling, be sure to tick "remove this device driver software", after the uninstallation is complete, and then in the Device Manager "scan for hardware changes", then you will find that the display becomes "Universal Plug and Play monitor". This time, you go to press fn+ brightness adjustment key, have effect now. The last thing to note is that the fn+ volume adjustment will have a screen display, but fn+ brightness adjustment no screen display, only brightness changes, I do not know is the individual phenomenon, or other WIN7 64 flagship Acer 4750 books are like this.
Acer 4750 fn+ Brightness key (left and RIGHT ARROW keys) Invalid problem solution
