The PC says "No Internet Connection" but I have internet.

Hello everybody, and thank you in advance for your time and energy given.

I have a problem with my internet connection on my PC as the Network and Internet status tab says that I have no internet connection and that I am not connected anywhere.
Problem is that I am actually connected to my network and I have internet., but the PC does not see it.
I have tried (almost) everything, but with no result.
I could live with that if I only wanted to surf, but in order to install a game I need a normal connection

I have reset the modem, router, the PC but nothing.
Please mind that on the Firewall info, it appears that the PC is connected to Public Network, and not on a Private one, but I can't change the settings as the network is not there to click it

I must mention to be more detailed that when I open the WiFi, the computer can find the network I want, I connect, says that I am connected to the network, but on the top of the small box says Not Connected!

I attach the diagnosis as well

I'd like to thank you in advance,
Elias

Hi Archer, firstly thank you for replying :)

I am afraid that there are some terms that I don't quite understand

e.g

Do you see some lights blinking on the card?

/ which "card"?

2. Where is the NIC and how can I check it?
3. In order to update my drivers, it asks me for money ( )

here is also my ip config

Hi again :)
Archer it is not possible to see it as we are dealing with an iMac and everything is sealed

The head breaker is that the computer is actually connected to both Ethernet and WiFi, opens the windows in all browsers and all pages I ask for but still; it does not understand that there is connection! :/

Did you try to double click on the red ex to see if the repair wizard can fix the problem?