Samsung UE55MU6172: WiFi Connection Issues, Audio Setup with Old Speakers, 4K Streaming

Hi. I have a few problems with the new TV, unfortunately I don't know it completely (I've never had a TV, and this one is not mine). I realize that this section may not be suitable for all problems, but I do not want to cover several topics.
1. Internet - after searching for and selecting the WiFi network, entering the password, a message pops up saying that it is connected to the local network, but not to the internet. Ip and dns can be set manually, but I don't know what to change there myself. Mac, ip address, gateway, dns, subnet mask are listed.

2. Audio - currently the only sound source is a TV, but something more "efficient" could be used. I have speakers (2 + subwoofer) from a bit old tower (only 15 years old) ), but I have no idea how to connect them. By trial and error, unfortunately, nothing worked (actually mainly a yellow-yellow adapter and red + white trial). I do not know if something can be grasped from current cables, whether it would be necessary to buy something (or it simply cannot).

In the picture we see ... what we see, the cables from the tower are these 2 and TV

3. I tried to connect my computer (i.e. connected) and set 4K resolution in the system and in some game, but in both cases the highest resolution to set is 1080p (graphics - gtx 1060). The first thing that came to my mind is that you need an HDMI 2.0 cable, but after asking your uncle the first results - it absolutely does not matter and every HDMI cable can handle such things as 4K or HDR. On some forum I read again again that you need 2.0. Or is it something else? How is it?

Hm. As I wrote, I tried this yellow adapter and connect the cables from the speakers to it, after all I set up the external audio source on TV as you wrote, but none of this, the sound or any settings are missing. There is no regular headphone jack either. I put everything on the TV in the pictures.

I know, I've figured that out before, but I had to try I realize that the only option is digital audio out, but how to solve this problem? Any adapter?

greyfoxx123 wrote:

after searching and selecting the WiFi network, entering the password, a message pops up saying that it is connected to the local network, but not to the internet.

Is TV at all within the range of a wifi network?
Scan of network environment with InSSIDerem v2 / Home and insert measurement result here.

Yes, it is, I forgot to write that the remaining problems are already solved. As for the internet, it "fixed itself" - I first connected to the hotspot from my smartphone and it worked, then I returned to wifi from the router and it also suddenly worked.
4k through an external source flying via HDMI also almost 100% that you will need a HDMI 2.0 cable.

Audio is still a problem. So you need a converter, but I was looking for these converters before I wrote the subject here, but it seems to me that they are the other way ... I doubt they convert both? That is, the output is on the ends and the digital input. Unless it somehow goes wrong in my brain. Could someone provide a converter that is good? Ie. 2 cinche input from speakers for 1 digital to the TV. By the way, the cheapest, because probably the more expensive ones, will be more expensive than these speakers: p

greyfoxx123 wrote:

That is, the output is on the ends and the digital input

Digital audio signal is input and China output.

greyfoxx123 wrote:

By the way the cheapest

The cheapest by nature have no name - such as the one from Allegro auction No. 6015670452 (search for its type).
Of the more expensive FiiO D3 / D7.

I'm ready to buy, because all other problems are already solved, and the only way out of audio is this converter. I want to make sure about the device. You gave me @ KOCUREK1970 , as the cheapest converter for 60 PLN, would one like 6781804978 (allegro) be inappropriate / too weak / risky or how? Because it looks the same, only cheaper - but maybe you better take the more expensive one, I don't know. This one does not have an optical cable in the set, but there are others that are cheaper with such a cable in the set.
Besides, I still have doubts that it will work 100%, so if somebody assured me it would be great TV - digital out, speakers - cinche.

greyfoxx123 wrote:

there are others also cheaper with such a cable in the set.

Count how much it will cost you to complete such a "set" and count which variant is more profitable.

greyfoxx123 wrote:

Besides, I still have doubts that it will work 100%

Buy and enjoy your purchase - it will work.