My desktop PC running W7 recently encountered an issue with connection. I have at&t service/router and am using an ethernet cable to connect. I have had no problems up until today when I booted up Amnesia and then minimized the game to change my volume. My mouse wouldn't move, even after opening task manager/etc., so I had to turn off the computer externally. When I turned the computer back on, I could not connect to the internet. I did troubleshooting only to find no results. It says I have a connection to my router, but not to the internet. I tried restarting the router (to no avail) and then I connected to the internet wirelessly on my laptop, so I don't think it is a router problem. Any help?