No sound following a driver update

Hello Julie,
Thank you for contacting AVG Community Support.
We regret the inconvenience caused. This isn't the experience we want you to have. We'll check and help you out.
We've sent you an email with further details. Please check your inbox/spam folders to find the email and use it to get back to us.
Thank you and keep us updated.

I updated my drivers using AVG last week and when I went to stream a workout this morning found that all my realtek sound has disappeared. I have always trusted AVG for several years, but now feeling very frustrated and less sure as this has completely messed up my computer. I have tried using the troubleshooter but reverting to previous versions hasn't fixed in and it's making me less sure of trusting AVG for the other products I buy from them.

Hello Jaco,
Thank you for contacting AVG Community Support.
We regret the inconvenience caused. We'll check and help you out.
Please write back to us in a separate post so that we can check and assist you accordingly.
Thank you in advance!

Hello Julie,
Thank you for contacting AVG Community Support.
We regret the inconvenience caused. This isn't the experience we want you to have. We'll check and help you out.
We've sent you an email with further details. Please check your inbox/spam folders to find the email and use it to get back to us.
Thank you and keep us updated.