Really slow internet problem


May 26, 2012
my internet speed is 10mb, i used to play xbox and use my pc at the same time with a laptop connected to wireless and it worked fine. then 3 days ago i started experiencing major lag on my xbox (couldnt even play bf3 online) and i got a message saying windows has detected and ip address conflict. my laptop isnt on when this happened just my pc and xbox.

speedtest says my internet speed is now at 3mb and i have to turn my pc off to have a decent game on xbox, how do i fix this?