Lenovo 7821, 7782, 7824, 7823, 7783 manual Troubleshooting and diagnostics, Basic troubleshooting

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Chapter 9. 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 73 for additional troubleshooting resources.

Basic troubleshooting

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

Note: If you cannot correct the problem, have the computer serviced. For a list of service and support telephone numbers, refer to the ThinkStation Safety and Warranty Guide that comes with your computer or go to the Lenovo Support Web site at http://www.lenovo.com/support/phone.

Symptom

Action

 

 

The computer does not start

Verify that:

when you press the power

• The power cord is correctly connected to the rear of the computer and to a

switch.

working electrical outlet.

 

 

• If your computer has a secondary power switch on the rear of the computer,

 

make sure that it is switched on.

 

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

 

• The computer voltage matches the voltage available at the electrical outlet for

 

your country or region.

 

 

The monitor screen is blank.

Verify that:

 

• The monitor signal cable is correctly connected to the monitor and to the

 

appropriate monitor connector on the computer.

 

• The monitor power cord is correctly connected to the monitor and to a working

 

electrical outlet.

 

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

 

correctly.

 

• The computer voltage matches the voltage available at the electrical outlet for

 

your country or region.

 

• If your computer has two monitor connectors, be sure to use the connector

 

on the graphics card.

 

 

The keyboard does not work.

Verify that:

 

• The computer is turned on.

 

• The keyboard is securely connected to a USB connector on the computer.

 

• No keys are stuck.

 

 

The mouse does not work.

Verify that:

 

• The computer is turned on.

 

• The mouse is securely connected to a USB connector on the computer.

 

• The mouse is clean. Refer to “Cleaning an optical mouse” on page 72 for further

 

information.

 

 

© Copyright Lenovo 2011, 2012

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Contents ThinkStation User Guide Fourth Edition June Copyright Lenovo 2011 Contents Appendix A. Notices Service and upgrades Important safety informationStatic electricity prevention Extension cords and related devices Power cords and power adaptersExternal devices Plugs and outletsHeat and product ventilation Operating environment Modem safety informationCleaning and maintenance Power supply statementLaser compliance statement Viii ThinkStation User Guide Product overview FeaturesConnectivity Power supply Dimensions SpecificationsSoftware provided by Lenovo Software overviewLocations Adobe Reader Antivirus softwareFront connector, control, and indicator locations Connector Description Locating connectors on the rear of your computerThat use a DisplayPort connector Component locations Locating componentsSystem board part locations Locating parts on the system boardMachine type and model label Locating internal drivesMachine type and model label ThinkStation User Guide Comfort Accessibility and comfortYou and your computer Arranging your workspaceAir circulation Glare and lightingElectrical outlets and cable lengths Moving your computer to another country or region Voltage-selection switchReplacement power cords Register your computer with LenovoThinkStation User Guide Security Security featuresLocking the computer cover Installing a padlockBios passwords Using passwordsAttaching an integrated cable lock Protecting data against viruses Windows passwordsConfiguring the fingerprint reader Using and understanding firewallsSecurity ThinkStation User Guide Handling static-sensitive devices Installing or replacing hardwareInstalling or replacing hardware Installing external optionsRemoving the computer cover Removing the computer coverInstalling or replacing a PCI card Removing and reinstalling the front bezelOpening the PCI card latch Removing a PCI card Installing a PCI card Installing or replacing a memory moduleRemoving a memory module Installing a memory module Installing or replacing the optical driveRemoving the optical drive Replacing the card reader Installing the optical driveRemoving the card reader Replacing the power supply assembly Removing the screws for the power supply assembly Replacing the heat sink and fan assembly Removing the heat sink and fan assembly Removing the primary hard disk drive Replacing the primary hard disk driveInstalling the hard disk drive into the bracket Replacing the secondary hard disk drive Installing the primary hard disk driveRemoving the secondary hard disk drive Installing the secondary hard disk drive Replacing the front fan assemblyRemoving the front fan assembly Installing the front fan assembly Replacing the rear fan assemblyRemoving the rear fan assembly Replacing the keyboard or mouse Installing the rear fan assemblyConnecting the USB keyboard or mouse Completing the parts replacementObtaining device drivers Creating and using recovery media Recovery informationCreating recovery media Performing backup and recovery operations Using recovery mediaPerforming a backup operation Using the Rescue and Recovery workspace Performing a recovery operationUsing a rescue medium Creating and using a rescue mediumCreating a rescue medium Reinstalling preinstalled applications Reinstalling preinstalled applications and device driversReinstalling device drivers Reinstalling software programsSolving recovery problems Recovery information ThinkStation User Guide Password considerations Using the Setup Utility programStarting the Setup Utility program Viewing and changing settingsSetting, changing, and deleting a password Power-On PasswordAdministrator Password Hard Disk PasswordSelecting a startup device Enabling or disabling a deviceSelecting a temporary startup device Selecting or changing the startup device sequence Enabling ErP compliance modeSmart performance choices Exiting the Setup Utility programThinkStation User Guide Creating RAID volumes Configuring RAIDRAID Level Resetting disks to non-RAID Deleting RAID volumesUpdating flashing the Bios from a disc Using system programsUpdating system programs Recovering from a POST/BIOS update failure Updating flashing the Bios from your operating systemBasic troubleshooting Troubleshooting and diagnosticsLenovo Solution Center Diagnostic programsPC-Doctor for DOS Lenovo ThinkVantage ToolboxCleaning an optical mouse Lenovo DiagnosticsGetting information, help, and service Lenovo Support Web site Help and serviceUsing the documentation and diagnostic programs Calling for servicePurchasing additional services Using other servicesThinkStation User Guide Appendix A. Notices Trademarks Electronic emissions notices Appendix B. Regulatory informationExport classification notice Television output noticeIndustry Canada Class B emission compliance statement Additional regulatory information ThinkStation User Guide Important Weee Information Appendix C. Weee and recycling informationRecycling information Recycling information for Brazil Battery recycling information for TaiwanBattery recycling information for the European Union ThinkStation User Guide Ukraine RoHS China RoHS Turkish RoHSIndia RoHS CRU IndexSetting, changing, deleting Page ThinkStation User Guide Page 1P0A74582
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7821, 7783, 7823, 7824, 7782 specifications

Lenovo has been a frontrunner in the technology sector, consistently pushing the boundaries of innovation with its diverse range of products. Among them, devices like the Lenovo 7821, 7783, 7824, 7782, and 7823 have garnered attention for their robust features, cutting-edge technologies, and versatile characteristics that cater to both casual users and professionals alike.

The Lenovo 7821 is designed with an emphasis on performance and portability. It boasts an impressive battery life, ensuring that users can remain productive without constant recharging. The integration of Intel’s latest processors enables seamless multitasking, allowing users to run multiple applications simultaneously without a hitch. Additionally, the 7821’s high-resolution display provides vibrant visuals, making it ideal for content consumption as well as productivity tasks.

Moving on to the Lenovo 7783, this model stands out for its advanced security features. With a fingerprint scanner and advanced facial recognition technology, users can be assured that their data is secure. The device also offers extensive connectivity options, including advanced Wi-Fi 6 capabilities, ensuring fast and reliable internet access. The sleek design combined with powerful internal specifications makes the 7783 a favorite among business professionals.

The Lenovo 7824 takes usability to the next level with its convertible design. Functioning both as a laptop and a tablet, it can easily adapt to different working environments and tasks. The 7824 is equipped with a stylus for natural handwriting input, making it a great choice for creatives and professionals who rely on sketching or note-taking for their work.

The Lenovo 7782 is focused on entertainment, sporting a superior audio system and vivid display. Whether users are streaming movies or playing video games, the immersive sound quality and visual clarity enhance the overall experience. This model also features high storage capacity options, allowing users to store large libraries of media without concern.

Lastly, the Lenovo 7823 excels in sustainability. With a design that incorporates recycled materials, this device prioritizes eco-friendliness while still delivering high performance. Users can enjoy a powerful computing experience with the peace of mind that they're contributing to environmental conservation.

In summary, the Lenovo 7821, 7783, 7824, 7782, and 7823 embody a blend of innovation, performance, and user-centric features. Each model presents unique characteristics that cater to different needs, whether it's for professional use, creative tasks, security, or entertainment. Lenovo continues to lead by example, focusing not just on cutting-edge technology but also on the overall user experience.
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