1.Remove the new hardware option or software. If you must remove the computer cover to remove a hardware option, make sure you review and follow the electrical safety information provided with your computer. For your safety, do not operate the computer with the cover removed.
2.Run the diagnostic programs to ensure your computer is operating correctly.
3.Reinstall the new hardware option or software following the manufacturer's instructions.
Select the problem your computer is experiencing from the following list:
•“Audio problems” on page 89
•“CD problems” on page 90
•“DVD problems” on page 91
•“Intermittent problems” on page 93
•“Keyboard, mouse, or pointing device problems” on page 93
•“Monitor problems” on page 95
•“Networking problems” on page 97
•“Option problems” on page 99
•“Performance and lockup problems” on page 100
•“Printer problems” on page 102
•“Serial port problems” on page 102
•“Software problems” on page 103
•“USB problems” on page 104
Audio problems
Select your symptom from the following list:
•“No audio in Windows” on page 89
•“An audio disc or
•“Sound comes from one external speaker only” on page 90
•“No audio in DOS applications or games” on page 90
No audio in Windows
Symptom: No audio in Windows
Actions:
•If you are using powered external speakers that have an On/Off control, verify that the On/Off control is set to the On position and the speaker power cable is connected to a properly grounded, functional ac electrical outlet.
•If your external speakers have a volume control, verify that the volume control is not set too low.
•
•Some models have a front audio panel you can use to adjust volume. If you have a front audio panel, verify that the volume is not set too low.
•Verify that your external speakers (and headphones, if used) are connected to the correct audio connector on the computer. Most speaker cables are
Chapter 10. Troubleshooting and diagnostics 89
