Disable Balloon Tips in Windows 7/Vista/XP [How To] | Windows 7
Firstly, Go to Control Panel and from the System and Security section, select Review your computer’s status.
Now in the left menu, select Change Action Center settings.
Next, you should remove the tick marks from the notifications you don’t want to receive in the Security messages and Maintenance settings sections.
Once you’re done with it, click OK.
Voila! That’s it – no more annoying balloon tips in your system tray. To verify if it’s working or not simply disable your firewall or Antivirus program that you’re using.