Chapter 5. Troubleshooting, Diagnostics, And Recovery; Basic Procedure For Resolving Computer Problems; Troubleshooting - Lenovo AIO V540-24IWL Hardware Maintenance Manual

Chapter 5. Troubleshooting, diagnostics, and recovery

This chapter provides solutions to resolve the 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 Chapter 2 "Important safety information" on page 27 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 to see if the computer has been infected by a virus. If the program detects a
virus, remove the virus.
3. Go to "Troubleshooting" on page 39 and follow the instructions for the type of problem you are
experiencing.
4. Run the diagnostic program. See "Diagnostics" on page 48.
5. Recover your operating system. See "Recovery" on page 49.
6. If the problem persists, contact Lenovo.

Troubleshooting

Use the troubleshooting information to find solutions to problems that have definite symptoms.
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