Error 8206, 422 Install Norton Internet Security 2012

On my moms computer, which have/had Norton Internet Security 2012, The SONAR-protection crashed, and i tried to fix it via Norton Autofix, but that did not work, so i restarted the computer and the problem were still thier, so i decided to remove NIS 2012 from the computer, so i removed NIS from the computer via Control panel, and then restarted the computer and used Norton Removal Tool, and restarted the computer again.

Now i installed Norton Internet Security 2013 instead.

The Installation goes fine, until you are coming the the last step, which is when come to the Explore-button, when i press the button, norton is crashing hard, and after a little awhile, i  i am getting a error message, which is 8506, 422, norton have encounterd a problem.

 

The Big Problem is that i can NOT Install Norton on my computer, under any circumstances, and it blocks the internet, so that i can not use the Internet at all.

 

when i remove NIS from the computer, internet works, but i can NOT Install NIS 2012/2013 on my moms computer.

 

and i have only used Norton on this computer, since my mom bought it.

 

I have used NPE, Malwarebytes, Superantispyware, but i found no threats on my computer.

 

Windows Vista 32 bit SP2, fully updated

 

Thanks in advanced

 

Sweman