I'm using a DLink DWR-112 3G router to connect to the internet. The router's default IP address was 192.168.0.1, which I had changed to 192.168.1.1 and used the same to open my router's configuration. Yesterday I was trying to use the port forwarding function and set the public and private port to 80. It asked me to restart my router for the changes to take effect. When I restarted my router and tried to open its configuration page using 192.168.1.1 it gave me an error shown in the picture below:

I tried to obtain the ethernet IP address automatically and used ipconfig /release and ipconfig /all to get the default gateway, but my IP address remains as it was being used statically, that is 192.168.1.6.
What could be the problem and how can I fix it?
