Can't Connect To My Wireless Network on Laptop?

Up until 3 days ago, my laptop worked perfectly, and has not been dropped, broken, damaged, etc. It is now connected to the wirless network, or at least it says it is, but I get the Internet Cannot Display Webpage. When I hit diagnose problems, it shows my PC, the wireless network, and the Internet with a red X through it? I hit repair, but I get "network diagnostics pinged the remote host but did not receive a response"... Any suggestions? I have an Acer notebook/laptop, whatever, I'm not computer savvy, LOL.... Any advice/suggestions is appreciated. Thanks!!