Netgear WNR612 Wireless Router - Network Error Message Saying Windows Has Detected IP Address Conflict

I have a Netgear WNR612 wireless router, which worked fine for a few weeks. Then something happened and I can't keep the connection anymore. It happened right after I used iTunes to update my iPhone, perhaps a coincidence, but I'm mentioning that just in case. Internet still works fine with ethernet cable straight from the computer, only the wireless connection doesn't work. This happened about a month ago and I haven't been at home much to fix the problem. I have turned off and unplugged everything for several days at a time while gone. I get a Network Error message saying, Windows has detected an IP address conflict. I have tried restoring the router back to factory settings and reinstalling the wireless card. I have tried changing the IP address settings both in the Network and Sharing Center and the router admin page. What I think I should do is change the IP address in Command Prompt, but when I type "ipconfig /release", it says "No operation can be performed on Wireless Network Connection 2 while it has its media disconnected" and the same for Local Area Connection. I don't understand what this means, because there is a wireless key in my keyboard and there is a white light (not orange) like there should be. Also in the Network and Sharing Center, I can see that the connections are enabled.