I was using my Xbox 360 Slim yesterday and was able to play online (Final Fantasy XI Online) as well as games like Dragon Age II (which requires server connection to the Dragon Age Servers to upload character data etc; the same thing happens with the Mass Effect games), and everything was working fine. Then last night I tried to connect online, and found I was unable to.
After running a Xbox Live Test Connection, I was still getting error messages. Tried the three methods listed as possible solutions (Reset Modem, Check IP Address etc), and after getting the same error message (Unable to connect to Xbox Live or w/e), I was then told to go to www.xbox.com/networkhelp, and from there went to the "Error: Can't obtain an IP address from your router or modem". Now, after going through ALL the possible solutions listed there (I rang up my ISP and got them to do a check of my connection etc; according to them it's working fine, which if it wasn't I wouldn't be posting this here now), I still can't connect online.
Please, is there any way to rectify this? Like I said, everything was working fine yesterday afternoon, then last night... this happens. Being unable to use my console to play some of my favorite games (and with Final Fantasy XI having to pay $35 AUSD a month subscription.... and NOT being able to play it...), due to this... 'problem', is annoying me greatly. Please help.