Hello Stryka55,
if it is, how Bandisoft said, that Bandicam shows "failed to start audio capture" and it happens since you switched your system, it could be that something is in the way of Bandicam.
What do I mean by that, well... in my case it was Nahimic, that created the same problem. Nahimic is a sound optimizer for MSI motherboards.
I looked up your motherboard and it turns out it allows you to use "SONIC STUDIO II".
If you are using that, please close it while recording (or end the task if it doesn't let you).
If not, please try closing some of the other gaming utilities you will probably have.
Maybe it helps.
I hope I was able to help you,
--Zuzu_Typ--