My desktop says I don't have a "valid IP configuration"

No dice.

I reset all of my network hardware, and it's still busted. My IP is also the same.

However, when I troubleshoot the network problem now, it just says that "Troubleshooting couldn't identify the problem."

Inclining me to believe we're getting somewhere :)

Can you bypass the Ethernet Switch and just plug the Ethernet cable from your PC directly to an available port on the router?

Unfortunately, no. My whole desktop setup is on my upper floor, and my router and all that is in the basement.

I'd normally be willing to drag it all down there, but it's midnight here and I wouldn't want to wake anyone.

I'd possibly suspect the link/cable from the router to the switch.

I'd tend to disagree since it was working up until my router went kaput.

Hmm, ok, nevermind I just made that connection in my head, I'll swap it out when I get back in an hour.

Thank you everyone for all the help you've been so far :)

Nothing from that either, I tried multiple different cords and none worked.

Is the router set as a DHCP server?

Yeah, that was one of the first things I checked.

Are the status LEDs from your router's LAN port to the ethernet switch blinking or just stable?