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Acer Aspire ES1-331 - Acer Bluelight Shield doesnt work

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Hello, im user of Acer Aspire ES1-331. I have been using it from February 2016 with Windows 8.1

For a long time Acer Quick Access and Acer Bluelight Shield were working properly but some days ago something happened and: option of sharing WiFi disappeared (it was under "Rozruch do pulpitu") from AQA and it became impossible to turn on ABS. Earlier when i turned it on or off it happened immediately. Now some dots are going around for a few seconds and i get that:

 

http://imgur.com/a/Epfjt

It means : "You cant control that device" . the same happens when i change intensity of ABS - nothing changes however it can write that it changed. On the screen "high" level is turned on but you see that it is a lie. I am using it on Admin accoutn of course.

I reinstalled Acer Quick Access but nothing changed and i cant use Acer Bluelight Shield. 
Rest of options of Acer Quick Acces works (Wifi and Bluetooth).

Thanks for reading!


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