If the drivers have been uninstalled then reboot into Safe Mode and use the tool Driver Cleaner to make sure every last remnant of them is gone.
Once that’s done reinstall the latest version of the relevant drivers. These can usually be obtained form your laptop manufacturer’s website. If you can’t find these then grab the relevant ones directly from the nVidia website.
If this fails then let us know but explain in more detail what exactly is going on when you say "it won’t work" and what model and spec your laptop is.