Re: No audio after putting PC to sleep
@kitte7 I wonder if your issue is the same as this one:
While that is about sound output changing, it's possible that the process of the computer transitioning to or from a sleep state has the same underlying effect.
Regardless, it's not a good idea to leave a game running while a computer is in sleep mode. Not only will there likely be performance issues, although those may be subtle, but problems like this are not uncommon. That's not to say you can't do so or that you'd be damaging your computer or save data, just that this process isn't really expected to work properly.