Lenovo 4218, 4155, 4158 manual Troubleshooting and diagnostics, Basic troubleshooting

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Chapter 8. Troubleshooting and diagnostics

This chapter describes some basic troubleshooting and diagnostic programs. If your computer problem is not described here, see Chapter 10, “Getting information, help, and service,” on page 47 for additional troubleshooting resources.

Basic troubleshooting

The following table provides information to help you troubleshoot your computer problem.

Symptom

Action

 

 

The computer does not start

Verify that:

when you press the power

v The power cord is plugged into the rear of the computer and into a working

button.

electrical outlet.

 

 

v If your computer has a secondary power switch on the back of the computer,

 

make sure that it is switched on.

 

v The power indicator on the front of the computer is on.

 

If you cannot correct the problem, have the computer serviced. Refer to the

 

safety and warranty information that is provided with your computer for a list of

 

service and support telephone numbers.

 

 

The monitor screen is blank.

Verify that:

 

v The monitor cable is securely attached to the rear of the monitor and to the

 

rear of the computer.

 

v The monitor power cord is plugged into the monitor and into a working

 

electrical outlet.

 

v The monitor is turned on and the brightness and contrast controls are set

 

correctly.

 

v The monitor signal cable is securely connected to the monitor and to the

 

monitor connector on the computer.

 

If you cannot correct the problem, have the computer serviced. Refer to the

 

safety and warranty information that is provided with your computer for a list of

 

service and support telephone numbers.

 

 

The keyboard does not work.

Verify that:

The computer does not respond

v The computer is turned on.

to the keyboard.

v The monitor is turned on and the brightness and contrast controls are set

 

 

correctly.

 

v The keyboard is securely connected to the keyboard connector on the

 

computer.

 

v No keys are stuck.

 

If you cannot correct the problem, have the computer serviced. Refer to the

 

safety and warranty information that is provided with your computer for a list of

 

service and support telephone numbers.

 

 

© Copyright Lenovo 2009

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Contents ThinkStation User Guide Page ThinkStation User Guide Second Edition October Copyright Lenovo Contents Appendix B. System memory speed Appendix C. Notices Introduction Vi User Guide Important safety information User Guide Glare and lighting Arranging your workspaceComfort Electrical outlets and cable lengths Air circulationConnecting your computer Setting up your computerUser Guide Setting up your computer User Guide Setting up your computer If you have powered speakers with an ac power adapter 1394 Completing important tasks Turning on computer powerFinishing the software installation Installing external options Installing other operating systemsUpdating your operating system Updating your antivirus softwareFeatures Installing the computer on a rack shelfConnectivity Security features Dimensions SpecificationsUser Guide Software provided by Lenovo Software overviewSoftware provided with your Windows operating system Lenovo ThinkVantage Toolbox PC-Doctor for Rescue and RecoveryLenovo System Toolbox Adobe ReaderStarting the Setup Utility program Using the Setup UtilityViewing and changing settings Using passwordsUser Password Password considerationsAdministrator Password Setting, changing, and deleting a passwordSelecting a temporary startup device Enabling or disabling a deviceSelecting a startup device Selecting or changing the startup device sequence Advanced settingsExiting from the Setup Utility program Installing Sata or SAS hard disk drives Installing hard disk drives and configuring RAIDFrom the RAID Config menu, select Create array From the RAID Config menu, select Delete array Configuring the Marvell Bios Setup to delete an arrayUser Guide Updating system programs Using system programsUpdating flashing Bios from a disc Recovering from a POST/BIOS update failure Updating flashing Bios from your operating systemUpdating system programs User Guide Basic troubleshooting Troubleshooting and diagnosticsDiagnostic programs Troubleshooting and diagnostics PC-Doctor for DOS Creating a diagnostic discNon-optical mouse Cleaning the mouseOptical mouse 2 Ball 3 Plastic rollers 4 Ball cage Creating recovery media Recovery informationCreating and using recovery media Performing backup and recovery operations Using recovery mediaPerforming a recovery operation Performing a backup operationUsing the Rescue and Recovery workspace Creating rescue media Creating and using rescue mediaCreating a recovery repair diskette Using rescue mediaCreating and using a recovery repair diskette Installing or reinstalling device drivers Using a recovery repair disketteSolving recovery problems Setting a rescue device in the startup sequenceInformation resources Getting information, help, and serviceOnline Books folder Lenovo ThinkVantage ToolsHelp and service Safety and WarrantyUsing the documentation and diagnostic programs Calling for serviceUsing other services Purchasing additional services Basic AT commands Appendix A. Manual modem commandsLow speaker volume Enable RTS/CTS hardware flow control Extended AT commands+MS=? MNP/V.42/V.42bis/V.44 commandsFax Class 2 commands Fax Class 1 commandsVoice commands Appendix A. Manual modem commands User Guide Appendix B. System memory speed User Guide Appendix C. Notices European conformance CE mark Trademarks Television output noticeIndex Page Page User Guide Page Part Number 53Y4327

4218, 4155, 4158 specifications

Lenovo has long been recognized for its innovative approach to laptop and desktop manufacturing, delivering a combination of performance, reliability, and value. The Lenovo 4158, 4155, and 4218 models are a testament to this commitment. Targeting a variety of users, these devices cater to both business and personal needs, ensuring that users have the tools they require for productivity and entertainment.

The Lenovo 4158 series is particularly noteworthy for its lightweight design combined with robust performance. This model is equipped with the latest Intel processors, which provide quick responsiveness and efficient multitasking capabilities. Users can choose between various storage options, including solid-state drives (SSDs) for faster data access and traditional hard disk drives (HDDs) for larger storage capacities. The display is another highlight of the 4158, featuring an anti-glare screen that enhances usability in bright environments.

Similarly, the Lenovo 4155 boasts impressive specifications aimed at budget-conscious consumers without compromising performance. This series is powered by AMD processors that deliver good processing power for everyday tasks. The graphics performance is also commendable, allowing for smooth video playback and casual gaming. Lenovo has incorporated a combination of USB ports and HDMI connections in the design, making it versatile for various peripheral devices.

The Lenovo 4218 model stands out with its advanced security features. It includes a fingerprint reader and TPM (Trusted Platform Module) chip, ensuring that user data remains secure. This model is built for professionals who prioritize data protection alongside performance. The 4218 is equipped with a full HD display, providing vibrant colors and clarity for presentations and media consumption. Additionally, its battery life extends beyond typical usage, enabling uninterrupted productivity throughout the day.

Each of these Lenovo models supports a wide range of connectivity options, including Wi-Fi 6 for faster internet speeds and a Bluetooth option that enhances connectivity with various devices. The ergonomic keyboards across all models are designed for comfort, reducing fatigue during extended use.

In summary, the Lenovo 4158, 4155, and 4218 series exemplify Lenovo's dedication to delivering high-quality technology catering to diverse user needs. With their compelling features and robust build quality, these models are well-suited for students, professionals, and casual users alike. Whether it's for creative tasks, business utilization, or general computing, users can rely on Lenovo to provide the tools necessary for success.
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