Computer doesn't recognize Ethernet cable (After lightning struck)

Click on this if you use a desktop computer.

Click on this if you use a laptop.

Click on this if your computer doesn't recognize the Ethernet cable from the Ethernet switch (a device used to interconnect computers and all devices with ethernet ports. https://goo.gl/p1WKnN

Click on this if your computer doesn't recognize the Ethernet cable from a modem.

Click on this if your computer doesn't recognize the Ethernet cable from the router.

Click on this if you have tried all the other options, but none of them worked.