I have Samsung NP200B5A Laptop. It has two graphic cards, one is Intel® HD Graphics and the other one is NVIDIA GeForce 315M. 315M is faster and I just want to know, why most software (ex.CPU-Z) or WEI show that I uses Intel® HD Graphics? I Use 315M for playing games because it's faster. I tried disabling Intel® HD Graphics to fix this (there is no other options), but the screen goes black. I restart the system and see the display was a low resolution. I Turn on Intel® HD Graphics again because of that. Now, I don't know why This happens, did 315M doesn't support Windows Aero? Or What is actually happening?