Cant use switchable graphics..

[Ruchindra Samarajiwa]

Guys i just got an acer aspire v5 laptop,

it has a intel HD 4000 graphics processor along with a nvidia 710m dedicated card.. but it never switches to the dedicated graphics while playing Dota 2.. ive tried every possible solution given online.. please help

 

[hsyuts]

Is the NVIDIA driver installed?