Apple MacBook (13-inch, Early 2009) - Manual (Page 47)

Chapter 4 Problem, Meet Solution 47
5 When the Apple Hardware Test main screen appears (after about 45 seconds), follow
the onscreen instructions.
6 If Apple Hardware Test detects a problem, it displays an error code. Make a note of the
error code before pursuing support options. If Apple Hardware Test doesn’t detect a
hardware failure, the problem may be software related.
For more information about Apple Hardware Test, see the Apple Hardware Test Read
Me file on the Applications Install DVD that came with your computer.
Problems with Your Internet Connection
Your MacBook has the Setup Assistant application to help walk you through setting up
an Internet connection. Open System Preferences and click Network. Click the “Assist
me” button to open Network Setup Assistant.
If you have trouble with your Internet connection, you can try the steps in this section
starting with Network Diagnostics.
To use Network Diagnostics:
1 Choose Apple () > System Preferences.
2 Click Network and then click “Assist me.”
3 Click Diagnostics to open Network Diagnostics.
4 Follow the onscreen instructions.