7User GuideImportant information about using thecomputerPress the power button on the side of the computer to turn on the computer.Hold the computer tightly when you carry it.

Lenovo C240 User Manual

IdeaCentre C240

user guide

important safety information

Using the Computer Hardware

Front view of the computer

Left and right views of the computer

Rear view of the computer

Computer stand

Connecting your computer

Important information about using the computer

Troubleshooting and Confirming Setup

Troubleshooting Problems with Hard Disks

Special considerations for troubleshooting system

Hardware Replacement Guide

Overview

additional information resources

Replacing hardware

replacing the keyboard and mouse

Appendix

Trademarks

Ubuntu Linux Special Instructions

software license

Chapter 1. About this manual

Chapter 2. Safety information

Safety inspection guide

Grounding requirements

Chapter 3. General information

Chapter 4. General Checkout

Chapter 5. Using the Setup Utility

Enabling or disabling a device

Selecting a startup device

Changing booting mode

Chapter 6. Symptom-to-FRU Index

POST error codes

controls and components

Chapter 8. Replacing hardware

Replacing the keyboard and mouse

Replacing the power adapter

Removing the rear cover

Replacing a memory module

Replacing the heat-sink

Replacing the system fan

Replacing the Wi-Fi card

Replacing the speaker system

Replacing the front indicator board

Replacing the power switch board

Replacing the motherboard

Replacing the computer stand

Replacing the converter board

Replacing the LED panel

Chapter 9. FRU lists-C240–245

Chapter 10. FRU lists-C255

Chapter 11. Additional Service Information

IdeaCentre C245

IdeaCentre C255

Lenovo C240 User Manual

Product

Learn More

Legal