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  • Add in your router's local IP config, and what static IP you attempted on your machine in your 9th bullet. The more details, the more help you'll get.
    – mfinni
    Commented Jun 25, 2020 at 17:46
  • Also please give some more details around "set up the router to accept that static address" - that shouldn't be a necessary step for a network. I'm thinking you may have configured something in the router that you didn't mean to and that's what messing you up, so I think the whole picture will help.
    – mfinni
    Commented Jun 25, 2020 at 17:48
  • Do you see incoming DHCP offers using Wireshark, or do you only see outgoing discovers/requests? (I'm somewhat surprised installing a new PCI NIC didn't help, since my main guess would have been that your Ethernet chip simply fried itself...) Can you try booting a different OS entirely, e.g. Ubuntu off a flash drive, and see if it works there? Commented Jun 26, 2020 at 11:07
  • I can see outgoing discover requests but no response. I tried booting from a cd into windows pe but still no connection. I also started in safe mode with networking and still couldn't ping the router. I'm also surprised the new nic didn't work as I assumed a dead motherboard adapter when the more obvious fixes didn't work in the first place. Rather disappointed when that didn't work either... Commented Jun 26, 2020 at 11:45
  • First - check the voltage output of the asus router power supply - they tend to be odd voltages - my rt-n66u was 18v, but the power supply failed but the router still worked (badly) on 12v. Second, test or replace all network cables. Do you have a USB ethernet adapter to try? Commented Jun 26, 2020 at 16:50