I recently purchased a n5520(core i5) with a 1gb dedicated ati card 7670. Unfortunately it seems the graphic card is not working at all. When i try to play a game (assassins creed 3) it runs only on power saving mode in the catalyst control control panel but crashes on the high performance mode. I tried disabling the hd 4000 integrated chipset from the device manager so that the laptop is forced to run on the ati gpu, but now the game does not run at all, as is there is no dedicated graphic card inside the machine. I installed all the drivers correctly and the catalyst control panel is also working fine, but i dont know why the graphic card is not working while a play the game. Please Help.
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