Obsolete even i install it several times

[Guest]

Hi, when i try to see you tube videos, it show me the word obsolete.

And even i´ve download several times properly, i think, it doesn´t work.

And it contunue putting me "flash is obsolete" in you tube´s videos

What can i do?

HElP

[C_F_McBlob]

What OS?

What browser?