The NIS 2012 installed on a Sony Vaio platform with Windows 7 OS does not open. I do not know if it is working but I can not open the program to perform a manual scan or update, a pop up window states that it has a detected an error which tells me to click on a link to download a Norton Power Eraser. I followed the instruction and after running the program, my computer will not boot up properly. I was able to fix the boot up problem using instructions from a different forum. I downloaded a Power Eraser from the site this time and it works. But I still can not open NIS 2012. I suspected that NIS 2012 files are corrupted so I decided to reinstall using the CD. After un-installing Norton, all my programs disappeared. My Start Up Menu was blank and the files were relocated. I was able to restore my programs after several System Restore tries, but several files attributes were changed to hidden. Some of them I do not have permission to access or change. NIS 2012 still does not open, I cannot do a manual update and manual scan.