I've been having problems with my network recently just for PC gaming. I'm able to go on the internet and do whatever just fine, but when I try to go on Steam, it'll say there's no connection to the internet and that I can either retry or go in Offline Mode (picture down below). I'll go on Origin just to play FIFA 13, and sometimes it'll have no problems, but most of the times when it's in the Checking connection... stage, it'll stay there for a few seconds and then say it can't connect to the EA servers.
The things that I've done are re-installing Steam and Origin, did a hard reset on my router, I already have an up-to-date firmware for the router, I've forwarded necessary ports and I've turned off the firewall.
This problem just came out of the blue. Didn't have anything newly installed, didn't change any network settings, nothing.
Router: Linksys E3200