How to delete NORTON under Toshiba Vista:
Click on the lower right corner of the screen NORTON icon, select to open Norton Protection Center
Select the Norton Internet Security tab in the pop-up window, and then click Settings
Next, close all items opened under Settings
Take Auto-Protect as an example, click Auto-Protect and select Off
Select the duration in the pop-up window and press OK
You can see that Auto-Protect has been turned off
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Follow the above method to close other open items
Finally close this window and you can delete NORTON in Control Panel Programs and Features
Note: First click on Norton Internet Security Uninstall, and then click LiveUpdate3.2 to uninstall