Most laptops have a "secret key combination" like my Sony Viao. On
mine, it's the "Fn" key + the F7 and F8 keys that cycle through laptop
screen, external screen & both screens.
Your manual will probably tell you which keys to use on the Dell.
GP
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> I have a Dell Inspiron 1000 laptop and want to use another monitor at the
> same time. The laptop has an output for another monitor, but dosen't work.
> Can someone tell me how to set it up?
>
> Thanks,
>
> Johnny