I guess you have a Windows OS, so I will give you some advice concerning Windows OS. Propably there is something wrong with the Flash Player installation on your notebook.
I suggest you firstly, uninstall flash player using the Flash Player uninstaller from Adobe and then reinstalling Flash Player.
Here are the steps to follow
1. Download Adobe Flash Player uninstaller from this link http://download.macromedia.com/pub/flashplayer/current/uninstall_flash_player.exe
and save it to your desktop.
2. Restart your computer
3. Exit all applications. Check the taskbar and the system tray to make sure that no user applicaiton are running. For example if you see icons for browsers or IM clients such as AOL Instant Messanger or Yahoo! Messanger, right-click the icon and select either Close or Exit.
At the following screen you can see an example of how to close a system tray application (the application displayed is Digsby Instant Messanger)
You have to close any running application that may be using Flash Player. Such applications are web browsers, Instant Messangers (MSN, Yahoo! Messanger, AIM, etc.), swf files, Projector files (.exe standalone Flash Videos or applications).
4. Run the uninstaller. If any message asking you for permissions to make any changes to the system pops up, allow it (Yes, Allow, Ok).
5. Restart your computer
6. Visit the Adobe Flash Player webpage
and check if the Flash Player is uninstalled. If the Flash Player is not
uninstalled you will see some information like this
In that case repeat these steps to completely uninstall Flash Player.
In case the Flash Player is uninstalled, then from that same webpage you can reinstall Flash Player.
7. Play Farmville!