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