Notebook Audio

Hello! 

So, I purchased my 15.6 HP ENVY x360 last year in late September at Best Buy and was totally psyched that I had this laptop! Although, it was not until last week that my laptop is acting up where the videos (YouTube, Windows Media Player) freeze or constantly have that "thinking" sign and no audio came from any outlet (iTunes, YouTube, Windows Media Player). I would restart my computer hoping everything works out, however, it did not. My laptop is not even a year old yet. The audio for this computer is by Bang & Olufsen and the speakers are above the keyboard.

It was until last Friday when I finally took my laptop into Best Buy since I bought the Geek Squad insurance. The Geek Squad employee did all the testing and we saw that once he turned on my laptop, the videos from YouTube were playing right away, however, there was no audio. They kept my laptop over the weekend and once picked up, they found out that the problems were because my computer was not updated, which is odd because I beleive that I have updated everything through HP support and my laptop settings. 

Today, two days later since pickup, the audio once again does not play anymore unfortunately. Once turning on my laptop, the videos and iTunes would play the audio with ease. Yet, once my laptop goes to sleep and logging back in, YouTube videos did not play the audio nor did my iTunes. 

So, please, any assistance for the problems that my laptop is dealing with would truly help me.