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Chapter 4. Troubleshooting, diagnostics, and recovery
This chapter provides solutions to resolve computer problems. Use the basic procedure as a starting point
for resolving computer problems.
Basic procedure for resolving computer problems
Prerequisite
Before you start, read Generic Safety and Compliance Notices , and print the following instructions.
1. Check that:
a. The cables for all connected devices are connected correctly and securely.
b. All components have been reassembled correctly.
c. All connected devices that require ac power are connected to properly grounded and working
electrical outlets.
d. All connected devices are enabled in UEFI BIOS.
2. Use an antivirus program (if any) to see if the computer has been infected by a virus. If the program
detects a virus, remove the virus.
3. See Chapter 4 “Troubleshooting, diagnostics, and recovery” on page 17 to resolve the problem you are
experiencing, run the diagnostic program, and recover your operating system.
4. If the problem persists, contact Lenovo. See Chapter 6 “Help and support” on page 35.
Troubleshooting
Use the troubleshooting information to find solutions to problems that have definite symptoms.
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