Flash Player in Opera

Good day.

I use Windows 7 (With updates), fresh Drivers, New Opera browser and Adobe Flash Player also new edition.

When open online video (y..tube or another site) first 2-3 second audio have, but after no any audio in player, help only if restart page view time. In another internet browser all working properly. Also in Opera in y..tube some video when loosing audio vrite what can't open video.

What to do for repair this error?

Thanks.