Is there a way to get the headphone jack to connect automatically and get sound through it instead of dealing with an additional prompt by the Realtek Audio Manager to choose between headphones and speaker out before the headphones work ?

I just got the g750jm and it comes with 8GB of ram. I want to upgrade to 16GB of ram but i don't know which one to get. Can someone suggest a specific one to get and i know the ram for this PC is ddr3l, which i'm not really familiar with. Thank you a...