Samsung Galaxy S4 GT-i9505 Wi-Fi Problem?

[dann]

So two days ago something happened to my wi-fi on my s4. When I try to connect to it, it would connect but then it will disconnect again 2 minutes later. The wi-fi button on the drop down menu will be stuck on a dim green color. Not grey (off) and not bright green (on) but something in between. And when I go to the wi-fi settings it's just stuck on "Turning On". This just happened out of the blue. It's not like a downloaded an app or I updated the system recently or anything.

I don't think it's a router problem because all the other devices at my house can connect to the internet just fine. Also I did a quick Google search and it seems a lot of people have had the same problem with the s4. But I haven't found a solution so please help me!