Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Yes, it seems that faulty was... monitor! Or rather fact that its old. im using iiyama from 2018 that uses hdmi 1.2 i guess. After pluging it to newer monitor that uses hdmi 2.0 i can get to the mac activation screen. i also used magic keyboard instead of regular windows one.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.