Summary

Chapter 4: Basics of Preventive Maintenance and Troubleshooting 9Although this utility lists details about the error, you might still need to research thesolution.Device ManagerThe Device Manager, shown in Figure 4-2, displays all the devices that are configured on acomputer. Any device that the operating system determines to be acting incorrectly will beflagged with an error icon. This type of error is denoted as a yellow circle with an exclamationpoint (!). If a device is disabled, it will be flagged with a red circle and an X.Figure 4-2Device ManagerBeep CodesEach BIOS manufacturer has a unique beep sequence for hardware failures. When troubleshooting,power on the computer and then listen. As the system proceeds through thepower-on self test (POST), most computers will emit one beep to indicate that the system isbooting properly. If there is an error, you might hear multiple beeps. Document the beepcode sequence, and research the code to determine the specific hardware failure.BIOS InformationIf the computer boots and stops after the POST, you should investigate the BIOS settings todetermine where to find the problem. A device might not be detected or configured properly.Refer to the motherboard manual to make sure that the BIOS settings are accurate.