Can the hard drive be recovered if the cooling fan on a Dell laptop quit and now it won't boot windows?
You'll have to remove the hard drive from the laptop and connect it to another working computer, laptop or desktop PC.
You can use IDE adapter for laptop hard drives - for connecting it to a desktop computer.
You can use external USB enclosure for laptop hard drives for connecting it either to a desktop or laptop computer.
You'll find instructions for removing the hard drive in Dell service manuals, they are available for download from the Dell website.
Follow links for more information about IDE adapter and external USB enclosure.