Lenovo ThinkCentre E73z User Manual (English)

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Questions and Answers:

A
April HughesSep 4, 2025
Why are some keys not working on my Lenovo Desktop keyboard?
- M
  Matthew GarciaSep 4, 2025
  If some or all keys on your Lenovo Desktop keyboard aren't working, verify that the keyboard cable is securely connected to the correct connector on the computer. If you're using an Enhanced Performance USB keyboard, and only the Rapid Access buttons aren't working, they might be disabled or unassigned. Use the help system in the Enhanced Performance Customization Keyboard program to diagnose these buttons.
Q
qsloanSep 3, 2025
Why will my DVD movie not play on Lenovo ThinkCentre E73z?
- S
  Scott ByrdSep 3, 2025
  If a DVD movie won't play on your Lenovo Desktop, ensure that the disc surface is clean and not scratched. Also, check the disc or package for regional coding; you might need a disc coded for your region.
J
John RodriguezSep 2, 2025
What to do if Lenovo Desktop CD or DVD does not work?
- W
  Wesley SmithSep 3, 2025
  If a CD or DVD doesn't work on your Lenovo Desktop, check these: * Verify the disc is inserted correctly, label up. * Ensure the disc is clean; wipe it with a soft cloth from the center outwards. * Confirm the disc isn't scratched or damaged. Try another disc that you know is good. If a known-good disc doesn't work, you might have a problem with the drive or its cabling. Ensure the power and signal cables are securely connected to the drive.
M
Melissa KellySep 2, 2025
Why is my Lenovo ThinkCentre E73z mouse not working?
- P
  Patricia JohnsonSep 2, 2025
  If the mouse isn't working on your Lenovo Desktop, make sure that: * The computer is turned on. * The mouse is securely connected to a USB connector on the computer. * The mouse is clean.
J
John SanchezSep 1, 2025
Why is my Lenovo Desktop screen flickering?
- J
  Jessica LarsenSep 1, 2025
  If the image on your Lenovo Desktop monitor appears to be flickering, the monitor might be operating in a low-refresh rate display mode. Set the monitor to the highest, noninterlaced refresh rate supported by your monitor and the video controller in your computer. The monitor might also be affected by interference from nearby equipment. Move fluorescent desk lighting or any equipment that produces magnetic fields farther away from the monitor.
W
Wanda SilvaAug 31, 2025
Why does my Lenovo ThinkCentre E73z monitor go blank after inactivity?
- M
  Matthew WebbAug 31, 2025
  If the monitor works initially but goes blank after inactivity on your Lenovo Desktop, the computer is probably set for energy savings. Disabling or changing the power-management feature settings might solve the problem.
A
adamsjonathanAug 30, 2025
How to fix 'No Operating System Found' on Lenovo ThinkCentre E73z Desktop?
- P
  paul64Aug 30, 2025
  If you see a "No Operating System Found" message or the system is not starting from the correct hard disk drive on your Lenovo Desktop, ensure that all hard disk drive signal cables and power cables are connected correctly. Ensure that the hard disk drive your computer starts from is listed as the first startup device in the Setup Utility program. In rare cases, the hard disk drive with the operating system might get corrupted or damaged, requiring replacement.
L
Lindsay HarrisonAug 29, 2025
Why do I see a black screen when playing DVDs on Lenovo ThinkCentre E73z Desktop?
- S
  sandovaljoseAug 29, 2025
  If you see a black screen instead of DVD video on your Lenovo Desktop, restart the DVD player program. If that doesn't work, close any open files, turn off the computer, and then restart it. You can also try a lower screen resolution or color depth.
T
Thomas GonzalezAug 28, 2025
What to do if Lenovo ThinkCentre E73z operating system does not start?
- C
  Carrie AllenAug 28, 2025
  If the operating system on your Lenovo Desktop doesn't start, verify that the startup sequence includes the device where the operating system resides, usually the hard disk drive.
M
Mrs. Debra Preston DVMAug 27, 2025
Why is my Lenovo ThinkCentre E73z Desktop monitor screen blank?
- S
  stephanie60Aug 28, 2025
  If the monitor screen is blank on your Lenovo Desktop, verify these points: * Ensure the monitor signal cable is correctly connected to both the monitor and the appropriate connector on the computer. * Confirm the monitor power cord is properly connected to the monitor and a working electrical outlet. * Check that the monitor is turned on and the brightness/contrast are correctly set. * Make sure the computer voltage matches the voltage available at the outlet. * If your computer has two monitor connectors, use the one on the graphics card.

Lenovo ThinkCentre E73z Specifications

General

Brand	Lenovo
Model	ThinkCentre E73z
Category	Desktop
Language	English

Summary

Important Safety Information

Service and Upgrades

Instructions for servicing and upgrading the computer, including customer replaceable units (CRUs).

Static Electricity Prevention

Precautions to avoid damage to computer components from static electricity.

Power Cords and Power Adapters

Guidelines for using power cords and adapters safely and correctly.

Extension Cords and Related Devices

Recommendations for using extension cords, surge protectors, and power strips.

Plugs and Outlets

Information on proper use of electrical plugs and outlets for the computer.

External Devices

Precautions for connecting and disconnecting external devices.

Heat and Product Ventilation

Basic precautions for ensuring proper heat dissipation and ventilation.

Laser Compliance Statement

Power Supply Statement

Warning regarding removal of covers on power supply components.

Tip-over Hazard Prevention Notice

Chapter 1. Product Overview

Features

Chapter 2. Using Your Computer

Navigating Among Screens

Chapter 3. You and Your Computer

Chapter 4. Security

Security Features

Overview of available security features like Computrace Agent and device control.

Attaching a Kensington-Style Cable Lock

Using and Understanding Firewalls

Protecting Data Against Viruses

Chapter 5. Installing or Replacing Hardware

Handling Static-Sensitive Devices

Precautions to prevent static-electricity damage when handling computer components.

Installing External Options

Replacing the Keyboard or Mouse

Chapter 6. Recovery Information

Recovery Information for Windows 7

Details on recovery solutions for the Windows 7 operating system.

Creating and Using Recovery Media

Steps to create and use recovery media for system restoration.

Performing Backup and Recovery Operations

Guidance on using Rescue and Recovery for backup and restore functions.

Using the Rescue and Recovery Workspace

How to use the Rescue and Recovery workspace for system recovery.

Reinstalling Preinstalled Applications and Device Drivers

Instructions for reinstalling factory-installed applications and device drivers.

Solving Recovery Problems

Recovery Information for Windows 8 or 8.1

Details on recovery solutions for Windows 8 and 8.1 operating systems.

Refreshing Your Computer

Steps to refresh the computer without affecting personal files.

Resetting Your Computer to Factory Defaults

Instructions to reset the computer to its original factory settings.

Using the Advanced Startup Options

Recovering OS if Windows 8/8.1 Fails to Start

Procedure to recover the operating system when it fails to start.

Chapter 7. Using the Setup Utility Program

Starting the Setup Utility Program

Steps to start the Setup Utility program for computer configuration.

Viewing and Changing Settings

How to view and modify system configuration settings in the Setup Utility.

Using Passwords

Information on setting passwords (Power-On, Administrator, Hard Disk) in BIOS.

Enabling or Disabling a Device

Selecting a Startup Device

Procedure for selecting temporary or changing the startup device sequence.

Chapter 8. Updating System Programs

Updating (Flashing) the BIOS from a Disc

Updating (Flashing) the BIOS from Your Operating System

Chapter 9. Preventing Problems

Keeping Your Computer Current

Getting the Latest Device Drivers

Chapter 10. Troubleshooting and Diagnostics

Basic Troubleshooting

Initial checks for common computer startup and display issues.

Troubleshooting Procedure

A systematic procedure for diagnosing and resolving computer problems.

Audio Problems

Solutions for issues related to no audio or sound from one speaker.

CD Problems

Troubleshooting steps for issues with CD drives and media.

DVD Problems

Solutions for issues like black screens or playback problems with DVD movies.

Intermittent Problems

Keyboard, Mouse, or Pointing Device Problems

Troubleshooting steps for non-functional keyboards, mice, or pointing devices.

Monitor Problems

Solutions for monitor issues such as flickering or discolored images.

Networking Problems

Guidance for common networking issues, including Ethernet and wireless LAN.

Option Problems

Performance and Lockup Problems

Solutions for issues related to slow performance or system lockups.

Printer Problems

Software Problems

USB Problems

Chapter 11. Getting Information, Help, and Service

Calling for Service

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Lenovo ThinkCentre E73z User Manual

Table of Contents