You are being vague and generic. We simply cannot know what is going on at that marker, you have not provided any exact system info nor any details about your comp settings, render settings and so on just as well as the actual system crash info. You could simply be genuinely running out of some resource like RAM or GPU memory just as well as this could be some more complex issue. No way to find out without better info at hand.
I'm running on Windows 10 64 bit PC. the problem is that I cant even render out the comp to preview not just as a final render. This problem only happens on Full resolution. Please let me know if you need any other information..
What effects are you using? What layers come on at that point? I mean, something at that point is crashing it, so start turning off effects and layers until you find the one that's making it crash.
Did you ever get around this issue? Please let us know what happened.