Does Lenovo P400 Touch have nvidia gpu? Because on Lenovo's site it says that P400 touch have "Nvidia N13P-GLR/GSR" and I don't have it on my laptop. I have intel HD 4000. I'm wondering if I have Nvidia N13P-GLR/GSR but I looked it up on device manager, it only shows intel hd 4000. How can I check if I have Nvidia N13P-GLR/GSR?