Krydolph

Although partially my bad for mixing up Realtek and Windows settings, disabling full-range speakers is the same as setting speakers to small. This is what my settings look like to get bass working: https://gyazo.com/5237c05fb4c8674b2ae97569932e6f3a
 
Incase you may ask since the name is confusing, full-range/large speaker sends whole audio frequency to your speaker including sub-bass, but nearly all speakers can't play sub-bass. Unticking full-range / change to small speaker would enable cut-off bass frequency, then enabling bass management would redirect that cut-off frequency and below to your sub, therefore allowing crossover between your sub and speakers.
Most people should do this, although there are some reasonable exceptions like AVR with built-in crossover feature for HDMI audio. In this case allowing full-range speakers would act like passthrough so that AVR can do the crossover job instead.

Also, for your bonus question: https://www.demolandia.net/downloads.html?id=48882118

I tried clearing CMOS, and it didn't help either.
I will send it in to them and wait their judgement.
It isnt the same board, as they were nice enough to let me order a new one with the promise of reimbursing me, if the first one was really defective. I have also tried with graphics card, same problem.
ty for the inputs, but as ProKon says, I feel like I have tried all troubleshooting already, so nothing to do than send it back, and curse myself for not using my normal dealer, but one so far away I cant just drive there, but have to wait for postoffice and so on.
 
I will post an update when I hear from them if anyone is interested.
 
thx for the help once again.