Troubleshooting - Lenovo 10A4 Hardware Maintenance Manual

• For Windows 7: Click the Start button to open the Start menu, and then click Control Panel.
• For Windows 8 or Windows 8.1: See "Accessing Control Panel on the Windows 8 or Windows 8.1
operating system" on page 36.
• For Windows 10: Right-click the Start button to open the Start context menu, and then click
Control Panel.
b. View Control Panel using Large icons or Small icons, and then click Recovery ➙ Open System
Restore.
c. Follow the instructions on the screen.
If this does not correct the problem, continue with the next step.
6. Run the diagnostic program. See "Lenovo Solution Center" on page 52 for more information.
• If the diagnostic program detects a hardware failure, contact the Lenovo Customer Support Center.
See "Lenovo Support Web site" on page 32 for more information.
• If you are unable to run the diagnostic program, contact the Lenovo Customer Support Center. See
"Lenovo Support Web site" on page 32 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 32 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 38
• "CD problems" on page 39
• "DVD problems" on page 40
• "Intermittent problems" on page 41
• "Keyboard, mouse, or pointing device problems" on page 42
• "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 49
• "Serial port problems" on page 50
• "Software problems" on page 50
• "USB problems" on page 51
.
Chapter 4 Troubleshooting and diagnostics
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