|Then you must be trying to install the wrong driver for it. Maybe you downloaded it from a Dell website which is for a different country? You must use the Dell website appropriate for your country, and you must enter your laptop's Service Tag to avoid getting the wrong driver.|
Go to the Dell website which is appropriate for your country, and enter the Service Tag from the sticker on the back of your laptop.
Go here: http://support.euro.dell.com/suppor...
If you don't live in the United Kingdom click on "United Kingdom" at top left to activate the country selector.