There are various ways to disable these Windows notification messages but the simplest way is basically to click on the messages and disable each by clicking on the turn off link.
To do this, follow this simple instruction.
1) Click the Red X flag on the notification area (bottom right of your desktop).
2) Click Open Action Center
3) Click the link Turn off message about [Anti-virus], [Windows updates], [Firewall], [Maintenance], [ActiveSync], [Backup], [etc].