Audio and Visual Not in Sync

Hi: I do not understand all of this, but here is my problem.

My audio and visual are not in sync. I have a PC which operates

Windows.

The visual comes first followed by the audio.

Our Logitech camera/mic is about a year old.

Can any one, in the most simplest terms, explain to me how to sync up the two.

I am so appreciative. Thank you.

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