wifi works ethernet doesnt

[wireless]

So i've had telus come out and set up some wired connections and wifi etc. everything was working fine until Yesterday morning (when i noticed it) and i've been stumped since, wifi is working as intended but one wired computer (of 2) does not work. it is hooked up to the "main" modem in the basement and the other wired connection is on the second floor hooked into the wifi extender. The second floor pc works as intended no problem what so ever but the basement computer will not connect, the windows 10 status box says "no network access" also im connected to an unidentified network. so what i did was restart the computer and the main modem and everything was fine! for 2 minutes and then it dropped again with the same message. if i disable the NIC card the problem persists, the only way to get that 2 minutes of internet it seems i have to restart both the modem and the computer. so i went out replaced the cord, didnt work, bought a new nic, didnt work. im wracking my brain trying to figure this out, it was fine nothing touched or moved then it just seems like it will not connect to the network...


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