a short while ago,,,,,30 minutes to be exact, i though there was a problem with wireless driver,,,so i un-installed it ! So, when i go to network and sharing like you advised, no profile exsist anymore ! So, when i choose the wireless connection i want now, i am asked for a password, which i enter . However, i keep getting the same reply after entering the password "Network security key mismatch" although i just checked the router incase there was a change somehow ! The password never changed and i keep getting that message now. Not sure about the next step................