I have no security software running and windows firewall is disabled. This is a wired desktop connection through a wrt320n router. No recent software or hardware changes. Network adaptor driver is updated.
This happened last night and was almost certainly something I did in a panic. One of my accounts was compromised and a charge was made to my PayPal. When I discovered they had access to my email I worried it may be through my router which didn't have any security more than a pw. I went in trying to find where to change the default login info for the time being and saw logs were disabled so I enabled them. Upon saving my network connection dropped. I know I changed my IPv4 to auto obtain the IP address and back to manually setting it and since then I have been unable to access my router. I am now getting the "Default Gateway is not available" error when running Windows diagnostic. I am unable to change any settings in the router.
If I set IPv4 and IPv6 both to auto obtain IPs and DNS, then I get the error of "Ethernet does not have a valid IP configuration."
If there is other info I need to provide let me know. Sorry I am a bit of an amateur when it comes to networking.
Here are screenshots of my network configurations