stealth 13 early 2019 speaker noise..

I bought the laptop yesterday but I hear annoying spearker noise everytime I play sounds on the laptop (music or video). How can I fix this problem? The sound is like somekinda bug flying inside the laptop (wing sound) brr...br....br...br..j..j.j..j.j..j..j.j....g.g.g.g.gg..g.g.g.g.g.g......j.j.j..j.j.j.j.j.j.....j.j... Also I hear to much noise inside the hardware like grgrgrgrgr...grgrg...grgrg..grgrgr... jjj... jjj... jjj. something like scratching