Nvidia Proprietory Drivers for Linux Mint 17.1 (http://ift.tt/1BHPU9l)

My laptop has dual graphics (Intel + Nvidia GeForce 820M) and i'm finding it difficult to install Proprietory graphic card drivers for the GeForce.

Have tried many methods on Ubuntu 14.04, and they have ended up crashing my Lightdm.

Please specify with minute commands on how i can get my proprietory drivers installed as i am a noob with Terminal cmds :D

Any help is greatly appreciated!

Note: Using Linux Mint 17.1 (based on Ubuntu 14.04) System Info shows: Intel Corporation Haswell-ULT Integrated Graphics Controller