built in wireles laptop not connecting to internet

Hello..

I was online playing world of warcraft one night and this annoying little bubble saying that there was an IP conflict on the network that kept popping up everytime i closed it… so after getting frustrated with it i went and fixed the problem by changing the tcp/ip setting i believe. but when i went to turn on my computer the next day i do not have connection on it =[…. i tried recoerving my laptop to an earlier state.. nothing went to ipconfig and it says media is disconnected, how do i connect it if its a built in wireless?