An option that was just installed does not workSymptom: An option that was just installed does not work.Action: Verify that:• The option is designed for your computer.• You followed the installation instructions supplied with the option and the installation instructions providedwith your computer, and all option files (such as device drivers, if required) are installed correctly.• You have not loosened other installed options or cables.• If the option is an adapter, you have provided enough hardware resources for the adapter to functioncorrectly. See the documentation supplied with the adapter (as well as the documentation for any otherinstalled adapters) to determine the resources required for each adapter.If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” onpage 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, andservice” on page 111.An option that previously worked does not work nowSymptom: An option that previously worked does not work now.Actions:• Verify that all option hardware and cable connections are secure.• If the option comes with its own test instructions, use those instructions to test the option.• If the failing option is a SCSI option, verify that:– The cables for all external SCSI options are connected correctly.– The last option in each SCSI chain, or the end of the SCSI cable, is terminated correctly.– All external SCSI options are turned on. External SCSI options must be turned on before the computeris turned on. For more information, see your SCSI documentation.• Verify that the option and any required device drivers are installed correctly.If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” onpage 109 for instructions). If you need technical assistance, see Chapter 11 “Getting information, help, andservice” on page 111.Performance and lockup problemsPoor performance and lockup problems can be a result of any of the following:• “Insufficient free hard disk drive space” on page 104• “Excessive number of fragmented files” on page 106• “Insufficient memory” on page 106Make a selection from the above list to find out more about the corrective actions you can take.Insufficient free hard disk drive spaceSymptom: Insufficient free hard disk drive spaceThe Windows operating system will slow down and might produce errors if the hard disk drive gets too full.104 ThinkCentre User Guide
