NIS 2012

Hi

 

This is my first post on here and hope somebody can help.

 

I've just installed NIS 2012 at the start of this month on to a Dell Inspiron 15 laptop running windows 7 home premium. Previously Norton 2011 antivirus was installed but auto removed when NIS installed.

 

Anyhoo the laptop's start up is now very slow and browsing pages on web is notably slower.

 

Is there something in settings I'm missing?

 

Thanks in advance.