Troubleshooting Procedure; Troubleshooting - Lenovo ThinkCentre M82 Hardware Maintenance Manual

Symptom
The operating system does not
start.
The computer beeps multiple
times before the operating
system starts.

Troubleshooting procedure

Use the following procedure as a starting point for diagnosing problems you are experiencing with your
computer:
1. Verify that the cables for all attached devices are connected correctly and securely.
2. Verify that all attached devices that require ac power are connected to properly grounded, functioning
electrical outlets.
3. Verify that all attached devices are enabled in the BIOS settings of your computer. For more information
about accessing and changing the BIOS settings, refer to your Chapter 6 "Using the Setup Utility
program" on page 59.
4. Go to the "Troubleshooting" on page 42 and follow the instructions for the type of problem you are
experiencing. If the Troubleshooting information does not help you resolve a problem, continue with the
next step.
5. Try using a previously captured configuration to see if a recent change to hardware or software settings
has caused a problem. Before restoring a previous configuration, capture your current configuration in
case the older configuration settings do not solve the problem or have adverse affects. To restore a
captured configuration, click Start ➙ Control Panel ➙ System and Security ➙ System ➙ System
Protection ➙ System Restore. If this does not correct the problem, continue with the next step.
6. Run the diagnostic programs. See "Lenovo Solution Center" on page 58 for more information.
• If the diagnostic programs detect a hardware failure, contact the Lenovo Customer Support Center.
See "Additional information resources" on page 34 for more information.
• If you are unable to run the diagnostic programs, contact the Lenovo Customer Support Center. See
"Additional information resources" on page 34 for more information.
• If the diagnostic programs do 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 "Additional information
resources" on page 34 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, 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.
42
ThinkCentre Hardware Maintenance Manual
Verify that:
• The startup sequence includes the device where the operating system resides.
Usually, the operating system is on the hard disk drive. For more information,
see "Selecting a startup device" on page 62.
Verify that no keys are stuck.
Action