I recently installed an MSI 750 Ti graphics card into my rig here, and ever since I have, games like World of Warcraft can't connect to the internet at all, and things like Payday 2 aren't able to join 90% of the games in matchmaking. But when I take it out, World of Warcraft works again, and Payday can connect to games, albeit with extreme frame rate lag due to the lowered graphics capability. I'm near clueless when it comes to computers, I know I'm leaving out specs here that one of you geniuses will need to properly assess this issue, so if you can tell me how to get it, I will post it. Thanks for your time, guys.