To watch Netflix over tv?

I have since half a year, an Android TV Sony, but lately in the wireless network is not found.

Is there anything I can do?

Want to watch Netflix with my TV, if that continues to hang with the Wi-Fi on the TV.

Is it possible somehow to connect my laptop with the TV but possibly get 4k out, and connects to sound with my av receiver?

Hope you can help me there I'm a bit desperate.

Which TV exactly (model), and what error message is output? Network settings checked (gateway and DNS)?

If you have game console the Netflix supports such. PS4 then you can watch it. But I would rather fix in your place WLAN problems.

I would rather solve the problem with the network instead of connecting to a laptop. 4k, you probably will not get it and you also have to constantly change if you want to use the laptop somewhere else.
Does your TV have no LAN connection? I would connect it directly via cable, so it runs most stable.
The best solution in my opinion is still an external device, preferably an Apple TV 4k, or these strange FireTV sticks would be sufficient. It does not cost the world and it has its peace forever, because these Android TV apps are really garbage I think, no wonder that you are not.

He has beautiful lan connection but I can't lay a cable of router because the stairwell is in between

Sony bravia kd 49 xf 8505 he always says he is connected but can't find internet although mobile can also find internet?

What is in the menu in the network settings? Do the values match the actual settings for the network (GW and DNS)? Ever disconnected from the Wi-Fi and newly furnished?

Addendum: You already use IPv4 in the WLAN, right? Otherwise, please proceed as follows:

https://www.sony.de/electronics/support/articles/00052930

Scho often newly furnished

@FordPrefect ok thanks First of all, I'll try when I'm home

Ever thought about Powerline? If you live in a house or apartment where you can't lay cables or want to avoid unnecessary kabellei, Powerline would be the best choice. Powerline only works on a power meter so house 1 and house 2 does not work. House 1 room 1 and house 1 room 2 go.