Lenovo 2117EKU manual Ethernet problems, Your computer cannot connect to the network

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Ethernet problems

For Ethernet problems, select your symptom from the following list:

•“Your computer cannot connect to the network” on page 63

•“The adapter stops working for no apparent reason” on page 63

•“If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the connection fails or errors occur” on page 64

•“If your computer is a Gigabit Ethernet model, it cannot connect to the network at 1000 Mbps. Instead, it connects at 100 Mbps” on page 64

Your computer cannot connect to the network

Symptom: Your computer cannot connect to the network.

Actions: Ensure that:

•The cable is installed properly.

The network cable must be securely connected to both the Ethernet connector of your computer and the RJ45 connector of the hub. The maximum allowable distance from the computer to hub is 100 meters. If the cable is connected and the distance is within acceptable limits but the problem persists, try a different cable.

•The cable is installed properly.

•You are using the correct device driver.

On the Windows 7 operating system, do the following:

1.Click Start ➙ Control Panel.

2.Click Hardware and Sound.

3.Click Device Manager. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

4.If an exclamation mark is displayed next to an adapter name under Network adapters, you might not be using the correct driver or the driver is not enabled. To update the driver, right-click the highlighted adapter.

5.Click Update Driver Software, and then follow the instructions on the screen.

On the Windows 8 operating system, do the following:

1.Open Control Panel.

2.Click Hardware and Sound.

3.Click Device Manager. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

4.If an exclamation mark is displayed next to an adapter name under Network adapters, you might not be using the correct driver or the driver is not enabled. To update the driver, right-click the highlighted adapter.

5.Click Update Driver Software, and then follow the instructions on the screen.

•The switch port and the adapter have the same duplex setting.

If you configured the adapter for full duplex, ensure that the switch port is also configured for full duplex. Setting the wrong duplex mode can degrade performance, cause data loss, or result in lost connections.

•You have installed all networking software that is necessary for your network environment. Check with your LAN administrator for the necessary networking software.

The adapter stops working for no apparent reason

Symptom: The adapter stops working for no apparent reason.

Chapter 10. Troubleshooting and diagnostics 63

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Contents Machine Types 2117 ThinkCentre Edge User GuideSecond Edition September Copyright Lenovo Contents Appendix A. Notices Index Iv ThinkCentre Edge User Guide Important safety information Service and upgradesStatic electricity prevention Extension cords and related devices Power cords and power adaptersPlugs and outlets External devicesHeat and product ventilation Operating environment Modem safety informationPower supply statement Cleaning and maintenanceLaser compliance statement ThinkCentre Edge User Guide Product overview FeaturesExpansion Input/Output I/O featuresPreinstalled operating system Power supplySecurity features Preinstalled software programsSpecifications Accessing Lenovo programs on the Windows 7 operating systemLenovo programs Program Icon name Accessing Lenovo programs from Control PanelFingerprint Software Accessing Lenovo programs on the Windows 8 operating systemAn introduction to Lenovo programs Communications UtilityPower Manager Lenovo SettingsLenovo Solution Center Password ManagerSystem Update LocationsView Management Utility Front connector, control, and indicator locations Connector Description Adjusting the frame stand Adjusting the frame standMachine type and model label Machine type and model labelWhere can I find help about the Windows operating system? Using your computerFrequently asked questions Accessing Control Panel on the Windows 8 operating systemUsing a fingerprint reader Using the keyboardUsing Windows shortcut keys Using the blue ThinkVantage buttonAdding the volume icon to the taskbar Using the wheel mouseAdjusting audio Setting the volume from the desktopHandling and storing CD and DVD media Setting the volume from Control PanelUsing CDs and DVDs Sound section, click Adjust system volumeRecording a CD or DVD Playing a CD or DVDThinkCentre Edge User Guide Comfort Accessibility and comfortYou and your computer Arranging your workspaceGlare and lighting Air circulationElectrical outlets and cable lengths Voltage-selection switch Registering your computerMoving your computer to another country or region Replacement power cords Security Security featuresUsing passwords Bios passwordsAttaching an integrated cable lock Protecting data against viruses Windows passwordsConfiguring the fingerprint reader Using and understanding firewallsThinkCentre Edge User Guide Handling static-sensitive devices Installing or replacing hardwareInstalling or replacing hardware Installing external optionsRemoving the system stand hinge cover Removing and reinstalling the system stand hinge coverRemoving and reinstalling the system stand Removing the system stand Obtaining device drivers Replacing the keyboard or mouseThinkCentre Edge User Guide Recovery information Recovery information for the Windows 7 operating systemCreating and using recovery media Performing a backup operation Performing backup and recovery operationsCreating recovery media Using recovery mediaUsing the Rescue and Recovery workspace Performing a recovery operationClick the Restore your system from a backup icon Creating and using a rescue medium Using a rescue mediumCreating a rescue medium Reinstalling preinstalled applications and device drivers Reinstalling preinstalled applicationsReinstalling preinstalled device drivers Reinstalling software programs Reinstalling device driversSolving recovery problems Refreshing your computer Recovery information for the Windows 8 operating systemThinkCentre Edge User Guide Using the Setup Utility program Starting the Setup Utility programViewing and changing settings Hard Disk Password Password considerationsPower-On Password Administrator PasswordSelecting or changing the startup device sequence Enabling or disabling a deviceSelecting a startup device Selecting a temporary startup deviceSmart performance choices Enabling ErP compliance modeExiting the Setup Utility program ThinkCentre Edge User Guide Using system programs Updating flashing the Bios from a discUpdating system programs Click Download Drivers & Software Click Use Quick Path Updating flashing the Bios from your operating systemUpdating your operating system Preventing problemsKeeping your computer current Getting the latest device drivers for your computerBasics Using System UpdateOptical mouse Cleaning your computerComputer KeyboardGood maintenance practices Cleaning a glass-screen surfaceMoving your computer Basic troubleshooting Troubleshooting and diagnosticsTroubleshooting Troubleshooting procedureNo audio in Windows Audio problemsCD problems Sound comes from one external speaker onlyNo audio in DOS applications or games DVD problems CD or DVD does not workBlack screen instead of DVD video Invalid disc or no disc found message DVD movie will not playNo audio or intermittent audio while playing DVD movie Playback is very slow or choppyIntermittent problems Keyboard, mouse, or pointing device problemsAll or some keys on the keyboard do not work Fingerprint reader does not work Wireless keyboard does not workMouse or pointing device does not work Pointer on the screen does not move smoothly with the mouseMonitor problems Wrong characters appear on the screenImage appears to be flickering Image is discolored Networking problemsAdapter stops working for no apparent reason Ethernet problemsYour computer cannot connect to the network Click Start Control Panel Click Hardware and SoundWireless LAN problem Wireless WAN problemWake on LAN feature is not working An option that previously worked does not work now Option problemsBluetooth problems An option that was just installed does not workInsufficient free hard disk drive space Performance and lockup problemsClick Defragment Now, then click Continue Printer problemsPrograms and Features area, click the Clean up button Excessive number of fragmented filesSerial port problems Software problemsSoftware does not work as expected Lenovo Solution Center USB problemsThinkCentre Edge User Guide Getting information, help, and service Lenovo Support Web site Help and serviceUsing the documentation and diagnostic program Calling for servicePurchasing additional services Using other servicesThinkCentre Edge User Guide Appendix A. Notices Trademarks Federal Communications Commission Declaration of Conformity Appendix B. Regulatory informationExport classification notice Electronic emissions noticesThinkCentre Edge User Guide Additional regulatory information ThinkCentre Edge User Guide Appendix C. Weee and recycling information Important Weee informationRecycling information Recycling information for Brazil Battery recycling information for TaiwanBattery recycling information for the European Union ThinkCentre Edge User Guide Ukraine RoHS China RoHS Turkish RoHSIndia RoHS Windows 7 or Windows 8 operating system Appendix E. Energy Star model informationThinkCentre Edge User Guide Index Cleaning Password Administrator Considerations

2117EKU specifications

The Lenovo 2117EKU is a versatile and robust laptop designed to cater to the needs of both professionals and casual users. This device is notable for its sleek design and impressive performance, making it suitable for a wide array of tasks from everyday computing to more demanding applications.

One of the standout features of the Lenovo 2117EKU is its processor. It is equipped with an efficient and powerful Intel Core processor, providing users with a seamless experience whether they are multitasking, streaming videos, or engaging in heavier applications like graphic design or software development. The integration of Intel’s latest technology ensures that the laptop can handle modern software demands while maintaining energy efficiency.

Another key characteristic of the Lenovo 2117EKU is its display. The laptop boasts a vibrant high-definition screen that delivers crisp visuals and vivid colors. This makes it particularly appealing for media consumption, whether for watching movies or working on photo editing projects. The anti-glare technology integrated into the display also enhances visibility in various lighting conditions, reducing eye strain during extended use.

In terms of memory and storage, the Lenovo 2117EKU offers ample options. With configurations supporting substantial RAM capacity, users can enjoy improved performance during heavy multitasking. Furthermore, the options for solid-state drives (SSD) provide faster loading times and improved overall system responsiveness compared to traditional hard drives.

The connectivity options on the Lenovo 2117EKU are also noteworthy. It includes multiple USB ports, HDMI outputs, and a headphone jack, facilitating easy connections to various devices and peripherals. Wireless connectivity is supported through the inclusion of Wi-Fi and Bluetooth capabilities, ensuring users remain connected to the internet and other devices without any hassle.

Additionally, the Lenovo 2117EKU emphasizes security with features such as a fingerprint reader and hardware encryption options, providing users peace of mind regarding data protection. This laptop is built with durability in mind, featuring a robust chassis that meets military-grade specifications for reliability.

In summary, the Lenovo 2117EKU stands out with its strong performance, stunning display, extensive connectivity options, and solid security features. These attributes make it an ideal choice for students, professionals, and anyone in between. Whether for work or entertainment, the Lenovo 2117EKU is crafted to meet diverse user needs while delivering a top-notch computing experience.
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