Windows 10: I am trying to play play on steam and other games but my ethernet wont let me.

I tried yesterday when i got back from a trip to play games and did, until i noticed it was over wifi and not the ethernet i had in the router. The router itself is not damaged and neither is the ethernet. When trying to troubleshoot and diagnose the issue, i fount no problem. My issues are that i can search up and look up certain websites like youtube, but cant use twitch. And when i try and use discord and steam, it doesnt work. When i tried what one person did on command prompt i was met with this under my ethernet ipv4 and ipv6 detailsC:\Windows\system32>ipconfig Windows IP Configurati

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steam game wont play

I purchessed nba2k15 on steam installed the game and when i tried to play it says error,i can play all my other games but this one what do i do

 

games in steam can't play

Original title: games in steam

ipurchesed nba2k15 on steam and can't play the game it says error

 

Sound not playing out of headphones for specific steam games only

I have Razer Man O' War headphones that work fine for literally everything except a select few steam games (e.g. Hollow Knight, Cuphead, Getting Over It, Ori and the Blind Forest). I can listen to music, watch Youtube videos, play other games, everything works, but for some reason when I try to play these games the sound doesn't play through my headphones. I can switch to my computer's speakers and the sound plays, if I plug in earphones into the earphone slot the sound plays (I think this works because it just replaces the computer speakers directly, and I don't even have to change output device for earbuds), but with my headphones, no sound whatsoever. Other steam games play sound (for example, PUBG, Stardew Valley, and Papers, Please all work fine), and I can't see why only a few of my games have this problem. I could just buy some earphones, but I'd rather fix this problem if possible. I'm on Windows 10.0.16299.