Wireless internet troubles

[LRPowell]

Hello,
Recently while I was gone, my room mate had to completely reset our router changing the name, security key, etc. when I got back and connected, the first night nothing was wrong. But since then the connection says that I am connected with perfect signal, the homepage pops right up without any trouble. But I can't go anywhere from there. No other pages will load. My phone connects perfectly, as does my roommates computer. My laptop is the only one having these issues.

Thanks

 

[corroded]

Delete the SSID from your laptop and "Find it" again and put the key in