Can i upgrade video card of my laptop?

i have asus k43sv and my video card is NVIDIA® GeForce® GT 540M 1GB vram, can i upgrade it to 2gb vram, with the same model?|||This question is asked twice a day, read the section. NO, NO, NO, NO, NO, NO, NO, NO, NO, NO,|||You cannot upgrade the graphics card of your laptop.|||jimmy said well .. no don't do that i suggest