You've completed the basic steps most will do so the next call is to Samsung to see if they have a fix in the works.
While viewing HD video my screen saver came on and I lost video portion but sound OK. Downloaded latest software for Samsung camera Model HV-30W. Same results. Ran software on a DELL Win 10 machine and no problems. Problem laptop is Toshiba Satellite. If I shoot a Standard Definition (SD) video with camera it plays OK?

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