Time is ticking for the Windows Vista operating system. Security and bug support for Vista ends on April 11, 2017. That means that there will be no more security updates for Vista. It will no longer be safe to go online with the Vista operating system.
Even if you have third-party security software, it won’t be able to keep your PC protected. Third-party security like Norton or Avast uses information provided by Microsoft to fix security holes. Without Microsoft’s input, they can’t permanently patch flaws in the operating system.
The options are the same as they were for users when XP ended. You could choose to stay offline and use your PC. In that case, you shouldn’t experience any issues. You can check to see if your device would support an upgrade to Windows 7, 8.1, or 10. You could also consider switching to Linux. But you really should do something.