NIS 2010 on win7 - uistb "unspec error"

I saw another posting on this.

I have just purchased a new HP mini-laptop which has a trial of NIS 2010 which I got working, and did a couple of LiveUpdates.

Now I notice that Norton isn't working, and I too get an 'unspecified error"    \17.7.0.12\uistub.exe

No such file exists in that file.

I read Phil_D's earlier reply, but where will I find the "Norton Activation Key"?

I never saw such a number when registering the 60-day trial version.

Will it be the same as my computer's serial number, I wonder?

I did write down my computer's serial number, and copied the activation key of another trial software which came pre-loaded.

 

I've already got some viruses on my files, so need to get Norton working again.

 

So, if I uninstall and re-install, what "activation number" shall I use, i.e. where to find it?