So i need to make a new installation from usb stick?
If a new Windows install will actually fix the "problem", yes.
Identify the problem before applying a solution.
You have a symptom:
"I am experiencing an issue with audio. When i start programs, the audio gets interrupted for 1 second. Its on youtube and my audio player. Even if i just surf sometimes the audio gets interrupted "
Why is it doing that?
Full hard drive?
Poor WiFi connectivity?
Underpowered laptop?
Too much bloatware?
Corrupt audio driver?
Something else?
Currently, you/we have no idea.
From the level of your questions, I am hesitant to suggest a full wipe and reinstall at this time.
It is relatively easy, but done wrong, can leave your brand new laptop in an unusable state.