If I understand correctly, you want to keep MS Office so that you'll be able to install it a third time on a new computer while keeping it on the laptop.
This is exactly what I want to do. The reason I don't want to go through and delete everything one at a time is because my laptop has been acting a bit... weird, I guess, lately, and instead of trying to find the problem, I thought it would be easier to just do a factory reset. Their is nothing on the hard drive that I paid for, or that is worth keeping, except MS Office.
Would I be able to save MS Office to a flash drive (probably multiple flash drives), do the factory reset, and re-install MS Office without it counting as the third install?