Notebook Audio

I've only had this laptop for two weeks and had nothing but sound problems connected to the latest Realtek drivers that HP Support Assistant insists on downloading for me! So far in the last fortnight, I've had to do an F11 HP recovery and re-install Windows 10 FOUR times along with all other software and games I had on my device due to the System Restore that I make sure I do before installation consistantly failing to take my device back to the previous state!

The weird thing is, I'm sure Windows Update has already installed the latest Realtek drivers on my device but it seems HP Assistnant insists on letting me know that they still have to be installed via 'it's' platform too. When I do this however, the sound completely goes off on the machine. Netflix, games, Windows sounds, everything. I've also tried the headphone port and that's dead too. The first time this happened two weeks ago, the sound just went really quiet whilst playing Netflix but now it's happened a forth or fifth time, the sound is completely dead. Also, the Bang and Olufsen control panel on the task bar no longer opens when I click it. Opening the audio troubleshooter finds no problems either. 

So in short there seems to be an issue with Windows Update and HP Support Assistant installing the same Realtek Drivers resulting in the sound problems I've described as well as the Bang & Olufsen control panel suddenly not working. This also seems to be linked with the System Restore always failing to revert to the prior state after installation. Is there any way of fixing this? Maybe purging the system of Realtek drivers altogether or am I going to have to spend another full day of my precious time re-installing Windows and all my other software for a fifth time?

Thanks!