Why can't I simply install the NVidia drivers from NVidia's website like I do with all my other computers?
With computers you mean laptops or desktops? I don’t know where do you work but I presume in your company or institution where are you working there is IT department. Contact people who are working there and I hope they can help you with explanation why you cannot use original NVIDIA drivers.
There is big difference between notebooks and desktops. Desktop graphic cards are supported by graphic card manufacturers directly but on mobile units support is by notebook manufacturers.
There are many reasons for that.