How to play x264,mkv file on pc

This is s a simple way but many people  didn,t know  how ot do that 

First download & install kmplayer from the official site

Second download k-lite mega codec pack 

Install first kmplayer http://kmplayer.en.softonic.com/
Second  k-lite mega codec pack 

http://www.free-codecs.com/k_lite_mega_codec_pack_download.htm

CHECK IF AUDIO AND VIDEO DRIVER IS INSTALLED PROPERLY