If the symptom your computer is experiencing occurred immediately after you installed a new hardware
option or new software, do the following before referring to the troubleshooting information:
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 97
•
“CD problems” on page 98
•
“DVD problems” on page 99
•
“Hard disk drive problems” on page 101
•
“Intermittent problems” on page 101
•
“Keyboard, mouse, or pointing device problems” on page 102
•
“Monitor problems” on page 103
•
“Ethernet problems” on page 105
•
“Option problems” on page 107
•
“Performance and lockup problems” on page 108
•
“Printer problems” on page 110
•
“Serial connector problems” on page 110
•
“Software problems” on page 110
•
“USB problems” on page 111
Audio problems
Select your symptom from the following list:
•
“No audio in Windows” on page 97
•
“An audio disc or AutoPlay-enabled disc does not automatically play when it is inserted into a drive”
on page 98
•
“Sound comes from one external speaker only” on page 98
•
“No audio in DOS applications or games” on page 98
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.
• Double-click the speaker icon in the Windows notification area. A master volume-control window opens.
Verify that the
Mute
settings are not checked and none of the volume settings is 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.
Chapter 11
.
Troubleshooting and diagnostics
97
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