1) Is your Nvidia driver up to date?
2) Restart and launch Boundless - Does is happen again? If so, how long does it take?
3) If it does, try another game. If it crashes again, it isn't Boundless, but your graphics card.
Also, can you post your recent event viewer log? (Post it to an online text editor and give us the link)
From there, we could help a bit more.