First of all you need to make sure that you are downloading the correct one for your computer since we have several options, once downloaded, Right click on the downloaded file and hit 'Run as an administrator'. After you do that it will start extracting and after it finishes extracting it should automatically start the installation.If you still see an exclamation mark on the device manager that means that it did not install correctly and you can do the following.Go to device manager, right click on the network wireless adapter, select update, then browse my computer and browse to:C: (or O.S disc) Dell/Drivers/ (folder # specified in driver, for example Rxxxxx).
And click on ok and it should work fine.The other way is to go to that folder normally and look for a file that says setup.exe. I'll leave a link for you to get to the Drivers and downloads for your computer.