I have a Asus A626

Make sure that there is a hot spot around that is unsecured for free access. If not, you'll have to get an access code. A wireless router works best.

I had the same problem. I installed something that was supposed to help me connect faster, but it messed up my whole system. I hard reset it and tried it out with the new router we got. I turned on the wi-fi and it asked me if I wanted to connect. Ever since it works.