I thought I did check the device manager to see if anything was disabled early into this problem, but I re-enabled them all in any case as they weren't at that time, you were right. I restarted my...

The router does show a green light for the connected port, I can't really try another cable, but the cable in use was working fine with that PC on Windows 7 right before upgrading.

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After much skepticism towards Windows 10, I finally decided to give in and upgrade from Windows 7 before the deadline, but much to my dismay, I encountered this problem as soon as the new OS finished...