Unshare ram from my laptop

[ka_islamzada]

Hello,
I have a hp laptop with 1GB dedicated Graphic, 4GB Ram, but when I install my windows 7, it shares 1.5GB of my RAM to my Graphic, and I need this 1.5GB for my daily works, please help me to unshared this 1.5gb of ram from my graphic.

Thanks

 

[nevertell]

Check the BIOS.