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Chapter 6. Troubleshooting, diagnostics, and recovery
This chapter provides solutions to resolve your computer problems. Follow the steps in the basic procedure
for resolving computer problems, which helps you make good use of the troubleshooting, diagnostics,
and recovery information.
• “Basic procedure for resolving computer problems” on page 43
• “Troubleshooting” on page 43
• “Diagnosing problems” on page 51
• “Recovery information” on page 52
Basic procedure for resolving computer problems
It is recommended that you use the following procedure to resolve computer problems you are experiencing:
1. Ensure that:
a. The cables for all connected devices are connected correctly and securely.
b. All connected devices that require ac power are connected to properly grounded, functioning
electrical outlets.
c. All connected devices are enabled in the BIOS settings of your computer. See “Enabling or disabling
a device” on page 33.
If these actions do not resolve your problem, continue with the next step.
2. Use an antivirus program to see if your computer has been infected by a virus. If the program detects
a virus, remove the virus. If the antivirus program does not resolve your problem, continue with the
next step.
3. Go to “Troubleshooting” on page 43 and follow the instructions for the type of problem you are
experiencing. If these troubleshooting instructions do not resolve your problem, continue with the
next step.
4. Run the diagnostic program. See “Diagnosing problems” on page 51. If the diagnostic program does
not resolve your problem, continue with the next step.
5. Recover your operating system. See “Recovery information” on page 52.
6. If none of these actions solve your problem, contact the Lenovo Customer Support Center. For a list of
Lenovo Support phone numbers, go to http://www.lenovo.com/support/phone. For more information
about help, service, and technical assistance, see Chapter 8 “Getting information, help, and service”
on page 99.
Troubleshooting
Attention: Do not open your computer or attempt any repair before reading and understanding the “Read
this first: Important safety information” on page iii.
Use the troubleshooting information to find solutions to problems that have definite symptoms.
Startup problems
The computer does not start up when you press the power button.
Solutions:
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