Cannot adjust screen brightness in Windows 8.1 on my G50-45

Hello there,
I just bought my new lenovo and instantly upgrade the system software into Windows 8.1.
Everthing looks fine instead of the screen brightness adjustment, i've downloaded the latest graphic drivers but nothing happened.
The display adaptor section into device manager keeps showing up that the driver is Microsoft Basic Display Adaptor rather than AMD radeon R2.
Thanks in advance guys.

hi kostas-mi , ecountered that issue a month ago and was able to resolved it
things you can try:
1- you can roll back the driver back to its stock state, if this doesnt work ,
2- install latest driver of your graphic card
3- This step will fix the problem:
- go to registery by regedit and change the value to 0xf048
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000]
"FeatureTestControl"=dword:0000f048
OR
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001]
"FeatureTestControl"=dword:0000f048
Dont fake the funk............

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Dear Customer,
Welcome to HP Support Forum and we are glad to assist you.
It looks like you are trying "Adjust Screen Brightness in Windows 8.1" for your Notebook.
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Hope this helps, for any further queries reply to the post and feel free to join us again
"I work for Hewlett-Packard"
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* * * * * Please mark Accept As Solution if it solves your problem * * * * *
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Cannot adjust screen brightness in Windows 8.1 on my G50-45

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