How i can get my window 7 key for my dell laptop

Not entirely sure that I understand. When you bought the laptop from Dell, did it have Windows 7 or some other operating system on it? If it had Windows 7, Dell should have provided a way to re-initialize it, or will send you a disk if you call.

If it had some other OS on it and you installed Win7, the Win7 product key needed to activate Windows on the machine should have come with your media.

Or are you asking for something other than the Windows activation key? I can't tell if your problem is activation or just that you want to display some maintenance information from Dell.

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Just run the free Belarc Advisor, available from www.belarc.com
it produces a report where you can find your product key

You cannot use this if your windows is preloaded from Dell, they use a bios-locked product key, which the same for all dells in a specific time slice.

Succes!

Look on the bottom of your laptop. All OEMs are required by law to provide you with the Windows Certificate Authenticity which has your product key on it. 99.99% of all laptop OEMs put the certificate on the bottom of the laptop.

Edit: I just checked my wife's Ispiron laptop and the certificate is located under the battery.

Run a program called recover keys. It will list keys for all the programs on your computer.

http://www.winkeyfinder.com/

winkeyfinder ^