Updating an old os
BLZBNTAGT000009D2 The Blizzard Agent detected that one or more system components do not meet system requirements.
Experienced users can download and install the latest motherboard chipset drivers to help resolve rare issues caused by outdated motherboard chipset drivers.
Step One To check if an update is available for your operating system. from the Apple menu at the top left of your screen.
Step Two The Mac App Store will launch, and after searching, it will display a list of updates available.
Step Five Your computer will reboot and the update will be applied.
Step Six Once your system has rebooted you will be on the latest version of OS X.