There are several possibilities.
1)You need the Norton Removal Tool:
2)Print this page
We suggest that you print this page before you start. PRINT
Save your Product Key
Note If you downloaded your product from your Internet Service Provider (ISP), then skip these steps, and contact your ISP to get the latest version
of your product.
If you have a product CD, or you downloaded your product from Symantec, you can locate the Product Key on the back of the CD sleeve, or in the
confirmation email that you received from Symantec for your download purchase. Once you write down the Product Key, go to
1 Start your Norton product.
2 On the top right corner of the main product window, click Norton Account.
3 Type in your email address and password for your Norton Account, then click Next. Note If you do not have a Norton Account set up already, click
Create a Norton Account, complete the form, then click Next.
4 Click Next to continue to your Norton Account.
5 Sign into your Norton Account using your email address and password.
6 Click the Norton product that you want to update.
7 Write down the Product Key.
8 Sign out of your Norton Account, then continue with STEP 3 below.
Download and run BUdump.exe
Note Budump.exe backs up your Norton 360 Secure Online Storage backup settings, and restores it when you reinstall Norton 360. Budump.exe runs quickly
and silently. If you do not back up your files to Secure Online Storage, then skip to Step 4.
1 Click the button to download BUdump.exe. DOWNLOAD
2 Click Save.
Save the file onto your Windows desktop.
3 On the desktop, double-click the BUdump.exe file.
4 Click Run.
Download and run Norton Removal Tool
You may also try doing a local search for norton/symantec in harddrive/registry.