Thank you for your response!
I had already tried that, unfortunately no effect, after installation you go to mol2 and you have to install the audio optimizer and after a few minutes the system reboots.
So did a factory reset, that didn't help either, because after doing all the updates you have to install the audio otimizer again.
Okay, so I uninstalled the mol2 again, but now don't install the audio optimizer to see if that's the problem, and yes! I have no sound but the system won't reboot!
So it is clearly the audio optimizer 1.2.3!
Is there also a possibility to go back to the optimizer 1.2.2?