Brightness problem

heya i have hp g009ax laptop with windows 8 (64 bit) and i am facing problem with the brightness level .i have tried it from control panel display personalization and also tried the manual keypad buttons but it doesnt responding in terms of the brightness issue . i have microsoft basic display adopter as in display adopter.its also updated one dont know how to lesser the brightness it has become really irritating now ,consumes all of my batterylife before its predicted time. Please help me to solve this issue . your fast response will be more helpfull.

Hi:
Microsoft Basic Display Adapter means that you need to install the graphics driver.  That is why you can't adjust the screen resolution, change the brightness or have graphics acceleration.
HP does not support your model for W8, and AMD did not develop a W8 graphics driver for the GPU your notebook has.
You will need to take the free upgrade to W8.1 from the Windows Store, and install the W8.1 drivers from your notebook's support and driver page.

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