Lenovo PC 300PL Using your Personal Computer - PC300PL - 6562 - Page 76

Power-On Self-Test POST

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The following tools are available to diagnose hardware-related problems: Power-on self-test (POST) Error messages POST message charts 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.us.pc.ibm.com/cdt/ 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. For additional information, see Setting Up Your Personal Computer. 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) As POST starts, numbers showing the amount of memory being tested appear in the top-left corner of the screen until the total amount of memory in the system is 62 Using Your Personal Computer

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The following tools are available to diagnose hardware-related problems:
±
Power-on self-test (POST)
±
Error messages
±
POST message charts
±
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
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.
For additional information, see
Setting Up Your Personal Computer
.
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)
As POST starts, numbers showing the amount of memory being tested appear in the
top-left corner of the screen until the total amount of memory in the system is
62
Using Your Personal Computer