When a wireless device tries to connect it can spend several tens of seconds checking the wireless pass key before it concludes it is wrong and you rarely get any message indicating the cause of the failure to connect - i.e. wrong password. So you need to eliminate that possibility. On a PC, write out the password in Notepad so you can see all the characters. Passwords are case sensitive. When you have the password exactly as it appears on your router, cut and paste it into the appropriate box (using CTRL and v to paste).
