Sound output changes every start

Hello there! Got a little problem with my Blade 15 here a little while now and can´t figure out how to solve it. The problem is, that when i start the laptop, the sound output changes everytime to the internal speakers of the laptop instead of the ones i have in my external display or my headphones. I can´t find any settings in Razer Central that could solve this, also the settings in windows don´t help either. I have to change the output sorce everytime manually. Does anyone know a trick or else to solve this please? Thanks in advance!