N360 will not install in compatibility mode.

Have just got a new Zoostorm tower system and realised that i still have a remaining copy of a 3 copy disk of Norton I can download. I put the disk in, started it up and I got the wording 'N360 will not install in compatibility mode. Close this window and restart the installer in normal mode.

I have right clicked on the 'START' and 'SETUP' and ensured that both, under the 'compatibility' folder, are not running in compatibility mode. but no matter how  I try  the same message keeps appearing. I am using windows 8.1 

someone suggest something please i am going nuts!!