The following tools are available to diagnose hardware-related problems:
Power-on self-test (POST)
Error messages
POST message charts
POST beep codes
Troubleshooting charts
Diagnostic programs
Note:
In addition to the preceding tools, if you have access to the World Wide
Web, you can also view or download the latest problem-solving tips from
the
http://www.ibm.com/pc/us/desktop/
Web site.
Descriptions of the diagnostic tools follow.
Power-On Self-Test (POST)
Each time you turn on your computer, it performs a series of tests that check the
operation of the base computer. This series of tests is called the power-on self-test
(POST).
Note
If your computer starts but does not boot when you press the power switch, do
the following:
Make sure all cables are securely connected to the correct locations.
Check to see if the voltage-selection switch is set to the correct position for
your country.
POST does the following:
Checks basic system board operations
Checks the memory operation
Compares the current system configuration with that established by the
Configuration/Setup Utility program
Starts the video operation
Verifies the presence of diskette drives, hard disk drives, and the CD-ROM
drive (if installed)
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