Wireless connection problem

Hello,After installing windows 7 on a dell computer, I lost the wireless connection feature.
also ,the router password has changed . please respond
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  1. Hello and welcome to Tom's Hardware Forums. There's probably a switch or a Function key you have to press to re-enable wireless. Look for eth little icon similar to this ((0)).

    To find the security key, which not even Dell could have changed, connect your router to the computer with the cable that came with the router then press your Windows key plus R and type in the following, including all the spaces:-

    cmd /k ipconfig /all

    then press Enter and from the black form that shows up, take a note of the numeric code beside the Default Gateway icon - something like

    Type exit to close the black form.

    Open Internet Explorer and enter that code into the URL address bar as though it was a website. You're then at the login page to the router's settings utility and admin will usually be the login with either admin or password as the password.

    If you're in, seek out Wireless and then Security and take a note of the key. Sometimes it may be a passphrase, some a simple set of letters and others a hexadecimal code. You also may as well note which level of security it is - WEP, WPA or WPA/PSK 2 and then either AES or TKIP. Your computer will already know this but it's handy information to store. Note also that hexadecimal only contains numbers from zero to 9 and letters a to f so there's no confusion of I and O with 1 and 0.

    It's best to keep a note of that security key in your Documents folder and also outside the computer.

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