Apple MB986LL User Guide - Page 101
Using Apple Hardware Test
UPC - 885909295722
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Note: To install iCal, iChat AV, iSync, iTunes, Safari, and the iLife applications, follow the instructions in "Installing Mac OS X and Applications" on page 99. You might need to insert the Mac OS X Disc 2, depending on the applications you select to install. Using Apple Hardware Test You can use Apple Hardware Test to help determine if there is a problem with your computer's hardware. To use Apple Hardware Test: 1 Disconnect all external devices from your computer except the power adapter. If you have an Ethernet cable connected, disconnect it. 2 Insert the Mac OS X Install Disc 1 that came with your computer. 3 Restart your computer and hold down the D key as it starts up. 4 When the Apple Hardware Test main screen appears, follow the onscreen instructions. 5 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 does not detect a hardware failure, the problem might be software related. For more information about Apple Hardware Test, see the Apple Hardware Test Read Me file on the Mac OS X Install Disc 1. Chapter 5 Troubleshooting 101