I recently purchased the MSI GE60 0ND-042US for my daughter for college/gaming. She has been having issues recently with the laptop shutting down in Skyrim at different times and I noticed it is using Intel HD 4000 graphics instead of the GTX660m video card. How do I force the laptop to use the GTX card instead? I've gone into the device manager and uninstalled the integrated card but it just reinstalls it after the reboot. Thanks