Install ubuntu 14.04 on Asus N550JV.

Summary at the first: It is quiet worth and strongly recommended to install/upgrade ubuntu 14.04 if using any prior version of ubuntu or any version of windows so far.

Install ubuntu 13.10 in Asus N550JV, along with windows 8.1.

** 2014/04/23 Update:
As ubuntu 14.04 LTS has been released in April 17, 2014, it is strongly recommended to install the LTS version. It is not only stabler, but also perfecter.