Alienware 15 

 with an Nvidia Geforece GTX 970m. Even after a system restore, in my device management I had a code 43 on it, and it just didn't work. So I downloaded the newest driver from Nvidia, and the triangle went away. However, now my laptop completely freezes. Whenever I disable or uninstall the video card, it works, but any time I let it run the laptop just completely freezes after 2-4 minutes. And the only way to do anything about it is a hard reset. Then after reset, the computer acts like nothing ever happened. Any help is appreciated. Thank you!