Laptop can't play videos, what is the reason?

My laptop can't play videos through youtube or the standard video player. Do you know this problem and maybe you know a solution.

Do you have a NEN Flashplayer?

Have you ever thought that with so many non-information you can help just zero meters? You might as well ask, "My car is not driving, what is the reason?".

Yes

Firewall or virus scanner blocked nothing?

Some browsers disable the flashplayer for security reasons…

Do not you get an error message?

No, that's not the problem

There was something else with html5 activate?

Ne