The brightness key of ACER ASPIRE 5750-6845 is not working. I had tried to increase that but it is not responding. I am bit stuck with very low light. I want some help here to increase the same. The same issue is with the volume key also. For that I hold the functions key and the f keys from the top to increase brightness and volume.But both are not working. I don't know what really happened to the system. I had given that to my friend for using.
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