Can't load N U 16 on my tablet that has no cd rom drive

Purchased Norton Internet Security with the N U 16 cd. My note book has no cd rom drive. Have copied the files to a flash drive, but when I try to install and device freezes up.

I have installed and registered both the security program and the NU 16 cd on my PC, but cannot find my registered NU 16 product on file. What to do? Thanks!