Hello, first of all Im new here so greetings to you all, now to my problem.
I recently moved to Norway with by best friend to his fathers place so we can go to collage here. I got a laptop here from his father to use as my own. Here is where my problem starts, the wifi here where we live is not ours, it belongs to a person above us since we live in the same house(the person above us gladly shares his internet with us). Since the wifi from the person above us is weak we got an Netgear wifi extender. That extender emits two wifi, Netgearextender 2g and Netgearextender 5g. All devices in the house can connect to both wifis if they can support it. My laptop which I am using cant connect to 5g since it is not support for it but it can connect to 2g except it cant. When I clik on the 2g wifi it connects to it but there is a little yellow triangle on it which suggests there is a problem with it. It says "No connection, secured" but when I connect to it with my phone it all works fine.
I have tried running the troubleshooter and it pops up with "Wi-Fi does not have a valid IP configuration" and "Problem with wireless adapter or acces point".I have tried uninstalling my network adapter, running some commands in cmd, updating my driver and it still wouldnt fix it.
The weird thing is, sometimes it can connect to the wifi and after some days pass the connection breaks and I get the same old problem...
Every help is appreciated. Also I am running windows 10 64bit and will include some photos.