Dell computers front panel buttons

I have a dell M90 laptop. My question is what are the uses of the front panel push buttons. I bought this used, works great but I don't have connection to my wireless network in my home. Perhaps I pushed something that I should not have done. l Any sugestions?
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  1. Welcome to Tom's Hardware Forums!

    On the side of the computer there is a slide switch for disconnecting from the internet. Check this switch.

    Download both the 'User's Guide' as well as the 'Service Manual' from here:

    These will explain in detail the functions of all buttons.
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Dell Computers Front Panel