Internet Works via Cable, WiFi Doesn't: Troubleshooting PC, Laptop & Router Connection Issues

Hello. Everything was fine for about a year. Recently I noticed (a PC rarely used) that it has stopped connecting by cable. Yellow message in network connection. After connecting the cable to the laptop it was the same. I have reset this one router which is the computer connected. At first I could only set it up via WiFi. On pc I tried various ipconfig commands read on the net. With no effect. IP set as automatic. It would not be surprising if it worked since I have 100mb internet. Now the laptop can be configured without a PC router (I suspect that after these commands have changed). Integrated card. In Everest, he doesn't show me the motherboard model now (weird). TV as a smart works without a problem because of the cable. WiFi worked from the beginning. Yesterday I changed and it was ok. In the morning I wake up and threw me out of this router which goes to pc. I set up the morning and it works for now. I remember combining with addresses in routers and then it worked. Now I don't remember the name for. This first router or address to login because I changed so that they do not bite. Now the PC is connected further with a cable (cable OK) and I can not enter 192.168.0.1 Q on WiFi and laptop can. But I won't go to tplinklogin.net for nothing, it won't let me in. I noticed in ipconfig / all that there is a strange IP address. I suspect this is it (although it is set automatically). Is anyone able to advise something? I suspect the card will be functional.

Configure this second router as AP http://www.tp-link.com/pl/faq-417.html

Ok I will try and it will work WiFi? Only now it seems to me that the card in the pc is configured incorrectly. I'll just check on my laptop to see if it works.

WiFi will work and will be better. Check the card in the PC.

One router worked once, but none worked. Jesscze in the browser settings I deselected something about the proxy and helped. So it's better this way? Will it no longer "land"?

And I didn't enjoy myself for a long time. It connects to the first router, sometimes loses coverage and disconnects. It doesn't connect with the latter at all. When I connected the lan port of the former to the wan port of the latter, it connected to the latter, but there was no internet on it. Anyone have any suggestions?

Internet was not on what? As for a router, this is normal, as for connected devices, it is wrong.

Internet is not available on the devices on the second router, i.e. a connection cannot be established. Oddly enough, the laptop recently connected to WiFi but there was no internet.