videos are very blurry on HP laptop

Hello i am new to this forum hoping to find solution.
I have bought a new hp pavilion g6 laptop 2 weeks ago , when i play any video a lot of pixels are appearing on the screen, i have tried playing in all popular media players but didnt work out.Tried to update driver but HP support assist says i have the latest updated driver.
Details:
hp g6 1210 TX laptop
ram GB ddr3
graphic card :intel hd graphics
dedicated 1GB graphics card:ATI radeon 6470m
processor:2nd gen core i5
settings of graphic cards:default

 

I found the clarity of videos(for example Youtube or online streaming of TV shows) is mostly dependent on the resolution of the video itself. For example, 360p looks like crap while some videos are saved at 720p, which looks very good.
Another limiting factor of what you see is of course going to be the max res of your screen itself. Unless you upgraded when you bought, you are looking at no higher than a 1366 x 768 resolution regardless of the source material resolution.

 

Try watching this in 720p: https://www.youtube.com/watch?v=6GRhE8ahzic&feature=g-pop&context=G2c856ebYPAAAAAAABAA
(yes, i know its in Russian. Its for testing.)
Also right click the video, go to settings, and disable hardware acceleration.

 

720p looks very good indeed. I can easily see that guys facial pores, if he had any...