There are some opengl options under NVIDIA Inspector , but I don't know of anyway to force any opengl version, I think RiviaTuner and nHancer used to have an OpenGL report option but I really dunno if these programs still work with modern drivers / cards, nhancer hasn't been updated since 2010 and most functions have been replaced by nvidia inspector, Riviatuner is also outdated.
(even if these programs do still work I doubt they will have opengl 4 support.)
(even if these programs do still work I doubt they will have opengl 4 support.)
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