You have a hardware error or perhaps a driver error. Microsoft says make sure that you have the latest updates. Make sure you have the latest Nvidia drivers. Hardware error can include overheating or memory problems from running the memory too hard (which could potentially be due to badly seated or marginal memory or overclocking.)
The link I included recommends particular testing software that I am not familiar with. Frankly, some sites post bogus testing software that claims problems that do not exist, so I advise checking out the reputation of that software before installing it.