Chapter 8. Troubleshooting
This chapter describes diagnostic tools that are available to you. You can
use these tools to identify and correct problems that might come up as you
use your computer. This chapter also contains information about option
diskettes and how to recover from a BIOS update failure.
Note:
If your computer does not start when you press the power switch,
do the following:
Make sure all cables are securely connected to the correct
locations.
Make sure the computer cover is installed properly (pushed all
the way on).
If this does not correct the problem, have the computer serviced.
Using Diagnostic Tools
Computer problems can be caused by hardware, software, or user error (for
example, pressing the wrong key). You can use the diagnostic aids
discussed in this chapter to help you solve such problems yourself or gather
helpful information you can pass on to a service technician.
You can check the hardware by following the procedures in this chapter.
You can also use the diagnostic programs provided with your computer
(see “IBM Enhanced Diagnostics” on page 118 for a description of these
programs).
If the hardware checks out, and you have not made a user error, you might
have a software problem. If you suspect that you have a software problem
and your computer came with IBM-preinstalled software, see the About
Your Software publication and the operating system documentation supplied
with your computer. If you have installed software applications yourself,
see the documentation supplied with the software.
The following tools are available to diagnose hardware-related problems:
Error messages
Power-on self-test (POST)
Troubleshooting charts
Diagnostic programs
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