• If you are unable to run the diagnostic program, contact the Lenovo Customer Support Center. See
“Lenovo Support Web site” on page 31 for more information.
• If the diagnostic program does not detect a hardware failure, continue with the next step.
7. Use an antivirus program to see if your computer has been infected by a virus. If the program detects a
virus, remove the virus.
8. If none of these actions solve the problem, seek technical assistance. See “Lenovo Support Web
site” on page 31 for more information.
Troubleshooting
Use the troubleshooting information to find solutions to problems that have definite symptoms.
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, ensure that 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 program to ensure that 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 37
•
“CD problems” on page 39
•
“DVD problems” on page 40
•
“Intermittent problems” on page 41
•
“Keyboard, mouse, or pointing device problems” on page 41
•
“Monitor problems” on page 43
•
“Networking problems” on page 45
•
“Option problems” on page 47
•
“Performance and lockup problems” on page 48
•
“Printer problems” on page 50
•
“Serial port problems” on page 50
•
“Software problems” on page 51
•
“USB problems” on page 52
Audio problems
Select your symptom from the following list:
•
“No audio in Windows” on page 37
•
“An audio disc or AutoPlay-enabled disc does not automatically play when it is inserted into a drive”
on page 38
•
“Sound comes from one external speaker only” on page 38
•
“No audio in DOS applications or games” on page 38
No audio in Windows
Symptom: No audio in Windows
Chapter 5
.
Troubleshooting and diagnostics
37
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