New Solidworks disk says licence expired?

I'm a student needing to work on my final project so I would appreciate any help.

I have used my only school supplied SDK, which expired the first of this year.

needing SW for a drawing package (and being denied another access code form the school...) I bought the program from the book store. I uninstalled SW through the apps manager, reinstalled with the disks, and now the brand new product says my licence is expired.

My assumption is that it is still trying to use the old key...any help??

Details:

SDK version: 14-15

New version (just bought): 15-16

Windows 10

Thanks.

SolidworksGeneral