Alienware 14 Graphics Card issue

Hi, I have an Alienware 14 laptop. The laptop has an NVidia Geforce GT 750m card and an Intel HD 4600 card. W\hen I'm playing a game or have a lot of programs opened, a window will pop up and say something about switching graphics cards to save battery life. I usually always have my laptop on charge. This issue is very annoying because I only want to use the NVidia card because I play games. Is there anyway I can stop this notification from popping up or disable the Intel HD graphics card? My laptop run Windows 8 and is an Alienware 14. Thank you! Any help would be appreciated.