© Copyright IBM Corp. 2001 43Chapter 6. TroubleshootingThis chapter describes diagnostic tools that you can use to identify and correctproblems that might come up as you use your computer. This chapter alsocontains information about option diskettes and how to recover from a BIOSupdate failure.Computer problems can be caused by hardware, software, or user error (forexample, erasing the wrong file). You can use the diagnostic aids discussed in thischapter to help you solve such problems yourself or gather helpful informationyou can pass on to a service technician.You can check the hardware by following the procedures in this chapter. You canalso use the diagnostic programs provided with your computer (see “IBMEnhanced Diagnostics” on page 64 for a description of these programs).If you do not identify a hardware problem and have not made a user error, youmight have a software problem. If you suspect that you have a software problemand your computer comes with IBM-preinstalled software, see “IBM EnhancedDiagnostics” on page 64 for information about how to run the IBM EnhancedDiagnostics program provided by IBM. Also see the operating systemdocumentation supplied with your computer. If you have installed softwareapplications yourself, see the documentation supplied with the software.The following tools are available to diagnose hardware-related problems:• Power-on self-test (POST)• Troubleshooting procedure• Error codes and messages• Troubleshooting charts• IBM Enhanced Diagnostics programIf your computer does not start when you press the power button, do thefollowing:• Make sure your computer is connected to a working electrical outlet.• Make sure all cables are securely connected to the correct connectors.If this does not correct the problem, have the computer serviced.Note
