Help With srcds?

I set up a Source Dedicated server for Garry’s Mod about a week ago, and it had been working perfectly up until yesterday. I started up the srcds.exe with the batch file I had been using. I made no changes to the server or the files, but now I can neither connect to it nor view it on the Dedicated Server browser. I’m getting a lot of crap now about getting it back up.

Does anyone have any suggestions about fixing it?

The server computer is behind a router, so I set up the port forwards. None of those settings were changed.

Thanks.

Yes, Try checking your IP config again and update it, If you need help, add me on steam. http://steamcommunity.com/id/DatElam/