So I have a second hand notebook. The previous owner seems solid and says that for him, he was able to catch his Wifi router without any issues, even when he was in front of his house and the router was in 3rd floor inside...
Now I am the owner and the laptop was in service once. I used wired lan before so I did not care, but now I tried the wifi adapter and it is almost useless. I have wifi router RIGHT next to it and it indicates only 3 bars out of 5. Any other wifi routers in the house are inaccessible.
I was looking into the computer and wifi antenna is connected. I even tried to switch the main and aux antennas and it did not help at all. When I disconnect antennas and just leave the adapter without them, I get 2 bars out of 5 in the same experiment as before.
I even took the whole computer apart (inc. display) and the antennas do not appear to be damaged or severed anywhere... This is a little mystery to me. What else can I try?