Underboss
Do you have another PC you can test with?
Failing that do you have a spare HDD? It'd only take an hour to install a clean version of Windows for testing.
The screenshot above of your network settings shows a 169.254 address, typical of Windows when its unable to attain a DHCP address.
Have you fixed your DHCP configuration and assigned a static to your PC either through a DHCP reservation or on the machine itself?
I would leave those all alone, the first one is actually enabling / disabling the DHCP server on your router, all your devices will be relying on this.
The second one is fine and also does not need touching.
You are looking for DHCP reservations, if your router cannot do it then you could set the IP statically on the Windows PC and then make sure your NAT rules point to that IP address.