Lenovo S710 Networking problems, Ethernet problems, Your computer cannot connect to the network

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Networking problems

The following are the most common networking problems. Select your networking problem from the following list:

“Ethernet problems” on page 43

“A wireless LAN problem” on page 44

“A wireless WAN problem” on page 45

“Bluetooth problems” on page 45

Ethernet problems

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

“Your computer cannot connect to the network” on page 43

“The adapter stops working for no apparent reason” on page 44

“If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the connection fails or errors occur” on page 44

“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 44

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.

Chapter 5. Troubleshooting and diagnostics 43

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Contents Lenovo S710 All-In-One Hardware Maintenance Manual Page Lenovo S710 All-In-One Hardware Maintenance Manual First Edition August Copyright Lenovo Contents Appendix A. Notices About this manual Important Safety InformationLenovo S710 All-In-OneHardware Maintenance Manual General safety Safety informationElectrical safety Lenovo S710 All-In-OneHardware Maintenance Manual Handling electrostatic discharge-sensitive devices Safety inspection guideGrounding requirements Safety notices multi-lingual translationsTo Connect To Disconnect ≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs Safety information Perigo Para Conectar Para Desconectar CuidadoPerigo Safety information Lenovo S710 All-In-OneHardware Maintenance Manual Safety information Connexion Déconnexion ≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs Vorsicht Arbeitsschutzrichtlinien beim Anheben der Maschine beachten AchtungLenovo S710 All-In-OneHardware Maintenance Manual Safety information Per collegarsi Per scollegarsi PericoloPrestare attenzione nel sollevare lapparecchiatura Lenovo S710 All-In-OneHardware Maintenance Manual Peligro No debe Adopte procedimientos seguros al levantar el equipo Lenovo S710 All-In-OneHardware Maintenance Manual General information SpecificationsLenovo Support Web site Lenovo S710 All-In-OneHardware Maintenance Manual General Checkout Problem determination tipsLenovo S710 All-In-OneHardware Maintenance Manual Basic troubleshooting Troubleshooting and diagnosticsSymptom Action Troubleshooting procedure Accessing Control Panel on the Windows 8 operating systemClick Settings Click Control Panel Audio problems TroubleshootingSound comes from one external speaker only No audio in WindowsNo audio in DOS applications or games CD or DVD does not work CD problemsBlack screen instead of DVD video DVD problemsDVD movie will not play No audio or intermittent audio while playing DVD movieKeyboard, mouse, or pointing device problems Intermittent problemsInvalid disc or no disc found message All or some keys on the keyboard do not workPointer on the screen does not move smoothly with the mouse Mouse or pointing device does not workFingerprint reader does not work Click Hardware and Sound Click Devices and PrintersWireless keyboard does not work Monitor problemsWrong characters appear on the screen Image is discolored Image appears to be flickeringEthernet problems Networking problemsYour computer cannot connect to the network Click Start Control Panel Click Hardware and SoundWake on LAN feature is not working Wireless LAN problemAdapter stops working for no apparent reason Wireless WAN problem Option problemsBluetooth problems Sound does not come from the Bluetooth headphoneAn option that was just installed does not work Performance and lockup problemsAn option that previously worked does not work now Insufficient free hard disk drive spaceClick Programs Click Turn Windows features on or off Click Disk CleanupClick Disk Cleanup Click Clean up system files Programs and Features area, click the Clean up buttonSerial port problems Printer problemsClick Defragment Now, then click Continue Click OptimizeSoftware does not work as expected Software problemsUSB problems Starting the Setup Utility program Using the Setup Utility programViewing and changing settings Using passwordsAdministrator Password Power-On PasswordSetting, changing, and deleting a password Enabling or disabling a deviceSelecting a temporary startup device Selecting a startup deviceSelecting or changing the startup device sequence Exiting the Setup Utility program Hard disk drive boot error Symptom-to-FRU IndexPower Supply Problems Beep symptomsBeep Symptom FRU/Action Post error codesShort and 1 long beeps Dram memory error Error code Post Error Message Description/ActionMessage/Symptom FRU/Action Miscellaneous error conditionsDisplay/Monitor Second device hard disk First device networkUndetermined problems Lenovo S710 All-In-OneHardware Maintenance Manual Locations Front connector, control, and indicator locationsRear connector locations Locating major FRUs and CRUs Locating major FRUs and CRUs Looking up FRU information Number FRU description Self-service CRU Optional-service CRULocating parts on the system board Locations of the parts and connectors on the system boardReplacing FRUs Removing and reinstalling the system stand hinge coverRemoving the system stand hinge cover Removing and reinstalling the system standRemoving the system stand Lenovo S710 All-In-OneHardware Maintenance Manual Removing the computer cover Removing and reinstalling the Vesa mount bracketRemoving the Vesa mount bracket Replacing the hard disk driveRemoving the hard disk drive Removing the hard disk drive from the bracket Replacing the optical driveRemoving the optical drive Connecting the cable and installing the screw Removing and reinstalling the system board shieldRemoving the system board shield Replacing the microprocessor fanRemoving the microprocessor fan Replacing the heat sink assemblySafety, Warranty, and Setup Guide, go to Replacing the microprocessor Opening the retainer to access the microprocessor Removing the microprocessor Removing the battery Replacing the batteryReplacing the inverter Installing a new batteryRemoving the screws that secure the inverter Installing or replacing a memory moduleRemoving a memory module Removing the internal speakers Replacing the internal speakersRemoving the integrated camera Replacing the integrated cameraReplacing the system board Lenovo S710 All-In-OneHardware Maintenance Manual Replacing the LCD panel Disconnect the LCD panel cable from the system board Removing the four screws that secure the LCD panel Reconnect the LCD panel cable to the system board Replacing the Wi-Fi cardRemoving the screw that secures the Wi-Fi card Replacing the USB keyboard or mouse Completing the parts replacementInstalling the computer cover Lenovo S710 All-In-OneHardware Maintenance Manual CRU ID FRU lists-S710WD XL1000S WD10EZEX-08RKKA0 1TB HDD-LH PIB65F/TAHOE Rear IO-1 China DIP +BKT Foot Holder Pcak W/RUBBER Additional Service Information Updating flashing the Bios from your operating system Power management Recovering from a POST/BIOS update failureClick Downloads and drivers Automatic Power-on features Automatic configuration and power interface Acpi Bios107 Appendix A. NoticesEuropean conformance CE mark Trademarks Television output notice109 IndexPOST/BIOS update failure