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 my product is Norton AntiVirus 2003 for Windows 2000/Me/98/XP change product

Situation:
You installed Norton AntiVirus or Norton AntiVirus 2003 Professional Edition and restarted the computer. This program does not start when you double-click its desktop icon or its icon in the system tray, or when you try to start it through Start and the Program menu.

Solution:

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Before you begin:

• This document is for Norton AntiVirus 2003 only. If you have the stand-alone version of Norton AntiVirus 2004, Norton Internet Security 2004 or Norton SystemWorks 2004, then read the document After installing Norton AntiVirus 2004, the program does not start or appears briefly and then disappears without displaying an error message.
• This problem is usually not caused by a virus or other infection. But, to rule out common threats, connect to the Internet and run the AutoFix Tool. (This takes a minute on a dial-up connection and a few seconds on a fast connection.) If no common threats are found, you can continue to the Symantec Security Check Web site for a complete scan.

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This problem has more than one possible cause. Try each solution in the order listed. If the first solution does not apply to your situation or does not fix the problem, then continue on to the next solution.

Click the icon to the left of the section to either expand ( ) or collapse ( ) that section, and follow the instructions. (If you cannot expand a section, then read the document Cannot expand sections in a Symantec Knowledge Base document.)

To verify that you are installing Norton AntiVirus correctly

To verify that your firewall is configured correctly for Norton AntiVirus

To edit the registry, restore Norton AntiVirus desktop icons, and complete the installation

To uninstall and reinstall Norton AntiVirus