I bought a vaio laptop a month ago. It has an Intel® Core™ i5-3210M Processor, Windows 8, NVIDIA® GeForce® GT 640M LE GPU(SPEED MODE) with 2GB dedicated video memory/ Intel® HD Graphics 4000(STAMINA MODE); and 4GB DDR3 RAM.

My system enables me to select the graphic card in stamina and speed mode via a performance switch. But in both the modes, the dxdiag command shows only the intel graphics card and dedicated memory as 32mb. I have attached the dxdiag txt file for your perusal. For specific programs, the GPU Activity Icon in the notification area shows that nvidia is operating. Is there any way via which I can select nVIDIA graphic card? Also, I wished to know that Why does the dxdiag command shows only intel graphic card in both the modes? Attachment 2062

Thank You.