Suddenly Wi-Fi isn't working

Question

When I left for class this morning, I checked the bus schedule like usual (on the iPad), with no problems. It worked perfectly. I turned it off and left for class.
I get back from classes today and turn my iPad, to come to a "Cannot connect to Linksys" message. I go into wireless settings, it has me type in my password, to which I get an "Incorrect password" message. So, I try several more times to type in the password, double checking it through my router settings page online -- I am typing it correctly, there is no doubt of that.
I then temporarily disable the security settings on my wireless router, thinking that would at the very lease rule out whether I was typing it incorrectly. Disabling the security did not help, when trying to connect afterward I got the "Cannot connect to Linksys" message again.
The next thing I tried was resetting the router itself. I restored it to its factory settings, thinking maybe it was having a problem. This did not work -- it was still giving the can't connect message.
Next, I tried resetting the iPad's network settings. This gave the same results: it did not work. Then I tried resetting ALL of the iPad's settings -- no luck. Finally, I backed up my iPad and wiped it clean. When I rebooted it, I didn't restore it as the settings I had backed up (I went back and did the same process again later to put everything back on it) but instead did it as though it was a brand new iPad, to rule out the possibility of any of the files on it having messed something up. This did not work either, it still produced the cannot connect message.
Please someone help me with this. I bought this iPad to use the internet, it becomes worthless without it.

Answer 1

etherealities wrote:
Well, I don't have any other wireless devices to try -- I am connected on my computer, however that's through the cord, not wirelessly.
If it makes any difference it doesn't show up the information for ANY of the wireless networks around here (all of them are passworded, so I can't use them to test whether the iPad would connect to them.)
None of the other wifi hot spots will show the DHCP info until the password is entered on the iPad. If your iPad can connect to other free hotspots in your city, then there likely nothing wrong with your iPad. If you have a friend with a wifi device, even a mobile phone that can connect to wifi, you can test it to see if your router is ok.