I have recently upgraded my laptop to the latest Windows 8.1 update and after that I am having problems with the brightness of the monitor. The screen is stuck on dim and I am not able to turn the brightness up. Even after pressing the keys on my keyboard to turn it up or down then the bard wil go up and down but the brightness will not change at all. I have also tried using the charm bar settings to adjust via control panel but still to no avail. What other troubleshooting method should I use to correct this problem? Thanks
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