Is Not Connecting The Internet

We have a wireless network setup in my house. I however am connected directly to the router with an ethernet cable. This was fine until recently when I was having a latency problem and RoadRunner had me bypass the modem to connect directly to the modem so they can make sure my router wasn't the problem. After that, I plugged the ethernet cable back into the router and now I keep getting prompted for a username and password for the PPPoE stuff.

My problem isn't connecting to the internet, I'm able to do that. But randomly, and it truely is random because sometimes it pops up and sometimes it doesn't on the same website, this PPPoE username/pass will pop up and sometimes if I hit cancel I'm able to load the page like normal and continue on. Other times when I hit cancel it does not load the page and I have to wait until later to try and load it again. The internet is broadband and from my reading should not require PPPoE or a username/password. Hopefully I've provided enough info, I'm not very techy and am not the one who setup the network. T