Lenovo ThinkStation D20 User Manual (English)

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Questions and Answers:

M
Mark LittleJul 26, 2025
Why Lenovo Desktop computer does not start when I press the power button?
- B
  Briana NealJul 26, 2025
  If your Lenovo Desktop computer doesn't start when you press the power button, check these things: * Make sure the power cord is properly plugged into both the back of the computer and a working electrical outlet. * If there's a secondary power switch on the back, ensure it's switched on. * See if the power indicator on the front of the computer is lit. If the issue persists, the computer may need servicing.
D
Donna SanchezAug 1, 2025
What to do if the Lenovo Desktop keyboard does not work?
- S
  Stephanie CoxAug 1, 2025
  If your Lenovo Desktop computer isn't responding to the keyboard, check these things: * Ensure the computer is turned on. * Make sure the monitor is on and that the brightness and contrast are correctly adjusted. * Verify the keyboard is securely plugged into the keyboard connector on the computer. * Check that no keys are stuck. If it still doesn't work, the computer might need to be serviced.
W
wcarrollAug 7, 2025
What to do if Lenovo ThinkStation D20 Desktop USB Keyboard does not work?
- A
  Amy TorresAug 7, 2025
  If your Lenovo Desktop USB keyboard isn't working, make sure the computer is turned on, the keyboard is securely connected to a USB connector on the front or rear of the computer, and no keys are stuck. If problems persist, the computer may need servicing.
M
Melissa BondAug 13, 2025
What to do if Lenovo Desktop monitor screen is blank?
- B
  blackmaryAug 13, 2025
  If your Lenovo Desktop monitor screen is blank, please verify the following: * The monitor cable is securely attached to both the rear of the monitor and the rear of the computer. * The monitor power cord is plugged into both the monitor and a working electrical outlet. * The monitor is turned on, and the brightness and contrast controls are properly set. * The monitor signal cable is securely connected to the monitor and to the monitor connector on the computer. If the problem continues, the computer may require professional servicing.
S
Sarah BoydAug 18, 2025
What to do if Lenovo ThinkStation D20 Desktop mouse does not work?
- E
  Eric LopezAug 19, 2025
  If your Lenovo Desktop computer isn't responding to the mouse, check that the computer is turned on, the mouse is securely connected to the mouse connector on the computer, and the mouse is clean. If you still have problems, the computer may need servicing.

Lenovo ThinkStation D20 Specifications

General

HDD capacity	500 GB
Internal memory	6 GB
Memory clock speed	1333 MHz
Processor cache	12 MB
Processor frequency	2.4 GHz
Power supply	1060 W
Plug and Play	Yes

Weight and Dimensions

Depth	602 mm
Width	210 mm
Height	485 mm

Summary

Introduction

Chapter 1. Important safety information

Chapter 2. Arranging your workspace

Comfort

Guidelines for ergonomic setup and comfortable posture while using the computer.

Glare and lighting

Tips for positioning the monitor to minimize glare and optimize lighting for better viewing.

Air circulation

Importance of proper air circulation for cooling and preventing overheating.

Electrical outlets and cable lengths

Considerations for electrical outlet placement and routing cables safely.

Chapter 3. Setting up your computer

Connecting your computer

Instructions on connecting peripherals like keyboard, mouse, and monitor.

Turning on computer power

Steps for powering on the computer after setup and initial startup procedures.

Finishing the software installation

Guidance on completing the initial software setup and accepting license agreements.

Security features

Features like cover presence switch, fingerprint reader, cable lock, TPM, BIOS passwords.

Specifications

Physical specifications like dimensions, weight, environment, electrical input.

Chapter 4. Software overview

Software provided by Lenovo

Details on Lenovo-specific software for productivity and maintenance.

ThinkVantage Rescue and Recovery

Description of the one-button recovery solution for system issues.

Lenovo Solution Center

Program to troubleshoot problems, diagnostics, system info, and support.

Chapter 5. Using the Setup Utility

Starting the Setup Utility program

Step-by-step instructions to access the computer's BIOS/Setup Utility.

Using passwords

Information on setting user and administrator passwords for security.

Selecting a startup device

Procedures for choosing the boot device.

Chapter 6. Installing hard disk drives and configuring RAID

Installing SATA or SAS hard disk drives and configuring RAID

Information on installing drives and setting up RAID configurations.

Entering the Marvell BIOS Setup to configure SATA or SAS RAID

Steps to enter Marvell BIOS for RAID configuration.

Chapter 7. Updating system programs

Updating (flashing) the BIOS from a disc

Instructions for updating BIOS using a bootable disc.

Recovering from a POST/BIOS update failure

Procedure for recovering the system after a failed BIOS update.

Chapter 8. Troubleshooting and diagnostics

Basic troubleshooting

Common symptoms and actions to resolve computer issues.

Diagnostic programs

Overview of diagnostic tools provided by Lenovo.

PC-Doctor for DOS

Diagnostic program for issues when Windows OS fails or other tools don't work.

Chapter 9. Recovery information

Creating and using recovery media

How to create and use recovery media for system restoration.

Performing backup and recovery operations

Procedures for backing up and restoring data using Rescue and Recovery.

Solving recovery problems

Troubleshooting steps for recovery issues.

Chapter 10. Getting information, help, and service

Information resources

Accessing various resources for computing needs.

Lenovo Support Web site

Accessing technical support, drivers, and manuals online.

Calling for service

Procedures for contacting customer support during warranty.

Appendix A. Manual modem commands

Basic AT commands

List of fundamental AT commands for modem programming.

Fax Class 1 commands

Commands for Fax Class 1 modem operations.

Fax Class 2 commands

Commands for Fax Class 2 modem operations.

Appendix B. System memory speed

Table 1. DIMM type and speed: PC3-10600U

Memory speed based on DIMM size, count, and microprocessor model.

Table 3. DIMM type and speed: PC3-10600R

Memory speed based on DIMM size, count, and microprocessor model.

Appendix C. Notices

Trademarks

List of trademarks for Lenovo, Microsoft, Intel, and Linux.

Appendix D. WEEE and recycling information

Recycling information

Lenovo's programs and services for recycling IT equipment.

Appendix E. Restriction of Hazardous Substances Directive (RoHS)

China RoHS

Hazardous substance content for Chinese market products.

India RoHS

Compliance with India's E-Waste (Management & Handling) Rules.

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Lenovo ThinkStation D20 User Manual

Table of Contents