Z40-70 Laptop

Lenovo Z40-70 Laptop

The Lenovo Z40-70 is a notebook computer featuring an integrated camera, built-in microphone, wireless networking, stereo speakers, a standard keyboard, and a touchpad. It includes VGA and HDMI display connections, three USB ports, an Ethernet port, a memory card reader, and an optical disc drive.

The laptop features a Novo button for accessing BIOS Setup, the boot menu, and Lenovo OneKey Recovery. It also includes keyboard hotkeys for adjusting brightness, controlling volume, enabling or disabling the touchpad, switching display output, and managing wireless connections.

This user guide provides instructions for setting up and operating the Lenovo Z40-70, using Windows 8.1, connecting external devices, interpreting battery indicators, managing system recovery, and troubleshooting common problems.

The guide also covers related Lenovo G40, G50, Z40, and Z50 models. The instructions below focus on the Z40-70, with model differences identified where necessary.

Product Overview

The Lenovo Z40-70 provides standard notebook computing functions, multimedia connectivity, and system maintenance options.

Its integrated camera and microphone support video communication and audio recording. The keyboard includes shortcuts for adjusting system settings, while the touchpad provides conventional mouse functions.

The computer also includes a removable battery pack and access to selected internal components for supported replacement and upgrade procedures.

Main Features

• Integrated computer display.
• Built-in camera for photos and video communication.
• Integrated microphone.
• Wireless LAN antennas.
• Standard keyboard with function keys.
• Touchpad with left- and right-click buttons.
• Stereo speakers.
• Removable rechargeable battery pack.
• Three USB ports, including USB 3.0 connections.
• RJ-45 Ethernet port.
• HDMI output.
• VGA display output.
• Combination audio jack.
• SD and MMC memory card reader.
• Integrated optical disc drive.
• Novo button for startup and recovery functions.
• Lenovo OneKey Recovery System.
• UEFI and Legacy Support boot modes.
• Kensington security-lock slot.
• Customer-replaceable storage, memory, wireless LAN card, and keyboard.

Supported Models and Machine Types

The user guide covers the following Lenovo notebook models.

The Z40-70 belongs to the smaller G40/Z40 design group. Models in the G50/Z50 group use a different keyboard layout and include additional model-specific hardware configurations.

Technical Specifications

General Specifications

Connectivity Specifications

The blue-colored USB ports are USB 3.0 connections.

Memory Specifications

The Z40-70 supports DDR3 SDRAM memory replacement using the internal memory socket.

Some configurations have only one memory slot.

If a single memory module is installed, it must be placed in SLOT-1, rather than SLOT-2.

Parts and Components

Top Components

The top of the Lenovo Z40-70 contains the computer display, camera, microphones, keyboard, Power button, and touchpad.

Integrated Camera

The built-in camera supports video communication and photography through compatible applications.

Built-In Microphone

The microphone captures sound for:

• Video conferencing.
• Voice narration.
• Audio recording.

Certain models covered by the guide have one microphone, while others use a different microphone arrangement.

Wireless LAN Antennas

The wireless LAN antennas transmit and receive signals for the laptop’s wireless networking system.

Power Button

Press the Power button to turn on the computer.

The Power button can also be used to enter or resume from Sleep Mode according to the configured power settings.

Touchpad

The integrated touchpad provides pointer control and mouse-button functions.

The left and right portions of the touchpad button correspond to conventional mouse buttons.

Left-Side Ports and Connectors

The left side of the Lenovo Z40-70 contains the power connector, Novo button, ventilation slots, display connections, Ethernet port, and USB connections.

AC Power Adapter Jack

Connect the compatible AC power adapter to the laptop’s power jack.

Novo Button

The Novo button is used when the computer is turned off or hibernating.

It provides access to:

• Lenovo OneKey Recovery System.
• BIOS Setup Utility.
• Boot Menu.

Ventilation Slots

The ventilation slots allow internal heat to escape.

Important: Keep these openings clear. Blocking the ventilation slots may cause the computer to overheat.

VGA Port

The VGA connection supports compatible external display devices.

HDMI Port

The HDMI connector allows the laptop to connect to a television or external monitor with an HDMI input.

RJ-45 Ethernet Port

The Ethernet connector allows the laptop to connect to a wired network.

The port includes a protective cover that moves downward when inserting a suitable network cable.

USB Ports

The USB connections support compatible USB peripherals.

Blue-colored USB connectors indicate USB 3.0 ports.

Right-Side Ports and Components

The right side includes audio, memory card, USB, optical drive, and security connections.

Combination Audio Jack

The combination audio jack supports compatible headsets.

Important: The connector does not support conventional standalone microphones by default.

Recording functions may not work with certain third-party headsets because of connector-standard differences.

Memory Card Slot

The card reader supports SD and MMC memory cards.

Optical Drive

The optical drive reads and writes compatible optical discs.

Kensington Lock Slot

A compatible Kensington security lock can be attached to help prevent unauthorized removal of the laptop.

Check lock compatibility before purchasing a security cable.

Bottom Components

The underside of the Z40-70 includes the removable battery pack, battery latches, and stereo speakers.

The bottom access compartment also provides access to selected internal components during supported replacement procedures.

Power and Battery Status Indicators

The system status indicators are located along the front edge of the laptop.

Power Status Indicator

Battery Status Indicator

Battery Charging Behavior

When the battery is charging below 20%, the indicator blinks amber slowly.

After the charge reaches 20%, the indicator changes to slowly blinking white.

When the charge reaches 80%, the white light stops blinking. Charging continues until the battery is fully charged.

A rapidly blinking amber indicator shows that the battery charge is below 5%.

Safety Instructions

Display Safety

Warning: Do not open the display panel beyond 130 degrees.

Before closing the laptop, remove pens and other objects from the keyboard area.

Objects trapped between the display and keyboard may damage the screen.

Ventilation Safety

Keep ventilation openings unobstructed during operation.

Blocked airflow can cause overheating.

Electrical Safety

Read and follow the Lenovo Safety and General Information Guide supplied with the computer.

Use appropriate electrical connections and compatible power equipment.

External Device Safety

Some USB accessories require their own external power source.

If a USB device uses a power cord, connect it to its power supply before attaching it to the laptop.

Otherwise, the computer may fail to recognize the device.

Do not connect or disconnect non-USB external device cables while the computer is powered on.

Battery Replacement Safety

Warning: Use only a battery pack supplied or recommended by Lenovo. An unsuitable battery may cause fire or explosion.

Before removing the battery:

• Shut down the computer.
• Disconnect the AC adapter.
• Disconnect external cables.

Storage Drive Safety

Do not remove the hard disk while the computer is operating or in Sleep Mode.

Back up important files before replacing the storage drive.

Memory Replacement Safety

Discharge static electricity from the body by touching a grounded metal object before handling memory modules.

Do not touch the electrical contacts on the memory module.

Use only compatible DDR3 SDRAM.

Before First Use

Connecting the Computer to Power

1. Locate the AC power adapter jack on the left side.
2. Connect the compatible AC power adapter.
3. Connect the adapter to an appropriate electrical outlet.
4. Press the Power button.

Initial Windows Configuration

The first-time Windows 8.1 setup process may include:

1. Accepting the end-user license agreement.
2. Configuring an Internet connection.
3. Registering the operating system.
4. Creating a user account.

Complete the instructions displayed during setup.

Keyboard Shortcuts and Hotkeys

The Lenovo Z40-70 includes keyboard controls for sound, brightness, wireless networking, display output, and touchpad operation.

Hotkey Guide

By default, these special functions can be activated directly through their corresponding keys.

Additional Fn Key Combinations

Adjusting Volume

• Press F1 to mute or unmute sound.
• Press F2 to decrease volume.
• Press F3 to increase volume.

Adjusting Screen Brightness

• Press F11 to reduce display brightness.
• Press F12 to increase display brightness.

Turning the LCD Backlight On or Off

Press F9 to switch the LCD backlight on or off.

Switching Display Output

Press F10 to change between the laptop display and a connected external display.

Enabling or Disabling the Touchpad

Press F6.

Enabling or Disabling Airplane Mode

Press F7.

Changing Hotkey Mode in BIOS

The keyboard operates in HotKey Mode by default.

This allows special functions to be used without holding the Fn key.

HotKey Mode can be disabled through BIOS Setup.

Disabling HotKey Mode

1. Shut down the computer.
2. Press the Novo button.
3. Select BIOS Setup.
4. Open the Configuration menu.
5. Find HotKey Mode.
6. Change the setting from Enabled to Disabled.
7. Open the Exit menu.
8. Select Exit Saving Changes.

When HotKey Mode is disabled, hold Fn while pressing the appropriate function key to activate its special function.

For example, the touchpad control becomes Fn + F6 instead of F6 alone.

Using the Touchpad

The integrated touchpad works like a conventional mouse.

Moving the Pointer

1. Place a fingertip on the touchpad.
2. Slide the finger in the desired direction.
3. The on-screen pointer moves accordingly.

Left-Click

Press the left-click portion of the touchpad button.

Right-Click

Press the right-click portion.

Enabling or Disabling the Touchpad

Press the touchpad hotkey, F6, using the configured HotKey Mode.

Using Windows 8.1

Windows 8.1 provides two main interfaces:

• Start screen.
• Windows desktop.

Switching from the Start Screen to the Desktop

Use either method:

1. Select the Desktop tile on the Start screen.
2. Press Windows + D.

Switching from the Desktop to the Start Screen

Use one of the following:

1. Open the Charms bar and select Start.
2. Press the Windows key.
3. Move the pointer to the lower-left corner and select the Start button.

Windows 8.1 Charms Bar

The Charms bar provides access to common Windows functions.

Opening the Charms Bar

Use either method:

1. Move the pointer to the upper-right or lower-right corner.
2. Press Windows + C.

Charms and Their Functions

Search Charm

Search can locate files, computer settings, applications, and supported web content.

Share Charm

Share allows supported applications to send links, photographs, and other content.

Devices Charm

Devices provides options for compatible external equipment, including printers and displays.

Settings Charm

Settings provides basic computer controls, including volume and shutdown.

When using the Windows desktop, it also provides access to Control Panel.

Sleep Mode and Shutdown

Putting the Computer into Sleep Mode

Sleep Mode reduces power consumption while allowing the computer to resume without completing a full startup.

Use one of the following methods:

1. Close the display lid.
2. Press the Power button.
3. Open Charms > Settings > Power > Sleep.

Important: Wait until the power indicator begins blinking before moving the computer.

Moving a computer while its hard disk is spinning can damage the drive and cause data loss.

Waking the Computer

Use either method:

• Press a keyboard key.
• Press the Power button.

If the computer does not wake after pressing a key, it may have entered an enhanced power-saving state.

Shutting Down the Computer

Use one of these methods:

1. Open Charms > Settings > Power > Shut down.
2. Right-click the Start button and select Shut down or sign out > Shut down.
3. Select the Shut down option in the upper-right corner of the Start screen.

Connecting to Wi-Fi

The Z40-70 supports wireless networking through its wireless LAN adapter.

Enabling Wireless Networking

1. Press F7 to disable Airplane Mode.

Alternatively:

1. Open the Charms bar.
2. Select Settings.
3. Open the network configuration page.
4. Set Airplane Mode to Off.

Connecting to a Wireless Network

1. Enable wireless networking.
2. Allow Windows to scan for nearby networks.
3. Open the wireless network list.
4. Select the required network.
5. Click Connect.
6. Enter the security key or passphrase if prompted.

Protected networks require the correct security credentials.

Contact the network administrator or Internet service provider when those details are needed.

Connecting to a Wired Ethernet Network

The laptop has an RJ-45 port for wired networking.

Ethernet Connection Instructions

1. Locate the Ethernet port on the left side.
2. Hold the network cable connector near the port.
3. Gently press the RJ-45 protective cover downward using the connector.
4. Insert the connector into the port.
5. Configure the network according to the Internet service provider’s instructions.

Connecting USB Devices

The Lenovo Z40-70 includes three USB ports for compatible accessories.

Connecting a USB Device

1. Locate an available USB port.
2. Insert the USB device connector.
3. Allow Windows to detect the device.
4. Complete driver installation if necessary.

Windows normally installs a compatible device driver automatically when the device is connected to a particular port for the first time.

Some accessories require driver installation before connection. Follow the accessory manufacturer’s instructions where applicable.

Removing USB Storage Safely

1. Finish transferring files.
2. Open Safely Remove Hardware and Eject Media from the Windows notification area.
3. Select the device.
4. Disconnect it after Windows permits removal.

USB Devices with External Power

For a USB accessory that includes its own power cable:

1. Connect the accessory to its external power supply.
2. Connect the accessory to the laptop.

A device without adequate external power may not be recognized.

Connecting External Displays

The Z40-70 includes VGA and HDMI connections.

Connecting Through HDMI

1. Connect a compatible HDMI cable to the laptop.
2. Connect the other end to an external monitor or television.
3. Turn on the external display.
4. Press F10 to open the display selection options.
5. Select the required display output.

Connecting Through VGA

1. Connect a compatible VGA cable to the laptop.
2. Connect it to the external display.
3. Turn on the display.
4. Use the display-selection hotkey to choose the required output.

Using the Combination Audio Jack

The combination audio connector supports compatible headsets.

Connect the headset to the jack on the right side.

The jack does not support a conventional standalone microphone by default.

Some third-party headsets may not support recording because of different connector standards.

Using Memory Cards

The Z40-70 memory card reader supports SD and MMC cards.

Supported Memory Cards

Insert only one memory card at a time.

Inserting a Memory Card

1. Locate the memory card slot on the right side.
2. Insert a compatible card.
3. Push it inward until it clicks into place.

Removing a Memory Card

1. Use Windows Safely Remove Hardware and Eject Media to stop the device.
2. Push the memory card inward until it clicks.
3. Gently pull the card out.

Using the safe-removal function helps prevent file corruption.

Using the Optical Disc Drive

The integrated optical drive reads and writes compatible optical discs.

The drive is located on the right side of the laptop.

For optical drive removal or replacement, follow the customer-replaceable unit procedure described in the hardware maintenance section.

Lenovo Novo Button

The Novo button provides startup and recovery functions without requiring normal Windows startup.

Opening the Novo Button Menu

1. Shut down the computer.
2. Press the Novo button on the left side.
3. Select the required option from the menu.

Novo Button Options

BIOS Setup Instructions

The BIOS Setup Utility displays computer information and provides configuration options for startup devices, security, hardware settings, and boot modes.

Entering BIOS

1. Shut down the laptop.
2. Press the Novo button.
3. Select BIOS Setup.

Available Boot Modes

Changing Boot Mode

1. Open BIOS Setup.
2. Select the Boot menu.
3. Locate Boot Mode.
4. Choose UEFI or Legacy Support.
5. Save the changes.

The guide specifies Legacy Support when installing compatible legacy operating systems predating Windows 8.

Opening the Boot Menu

1. Turn off the computer.
2. Press the Novo button.
3. Select Boot Menu.
4. Choose the required startup device.

The device must be enabled and correctly included in the BIOS Boot settings.

Lenovo OneKey Recovery System

Lenovo OneKey Recovery provides system backup and restoration functions.

The program uses a hidden recovery partition containing the system image and program files.

This hidden partition occupies part of the storage drive, which reduces the space displayed as available to Windows.

OneKey Recovery is unavailable on configurations preinstalled with GNU/Linux.

Backing Up the System Partition

1. Start Windows normally.
2. Press the Novo button to open Lenovo OneKey Recovery.
3. Select System Backup.
4. Choose a backup destination.
5. Click Next.
6. Allow the backup to finish.

Backup images can be stored on the internal hard disk or an external storage device.

Important: Remove any removable hard disk drive before starting Lenovo OneKey Recovery. Otherwise, data on that drive may be lost.

System Backup is available only when Windows starts normally.

Restoring the System Partition

1. Start Lenovo OneKey Recovery using the Novo button.
2. Select System Recovery.
3. Allow the computer to restart into the recovery environment.
4. Follow the on-screen instructions.
5. Choose either the original system state or a previously created backup point.

Warning: System recovery is irreversible. Back up important data from the system partition before starting.

Keep the AC power adapter connected throughout recovery.

Starting Recovery When Windows Cannot Boot

1. Shut down the laptop.
2. Press the Novo button.
3. Select Lenovo OneKey Recovery System from the menu.
4. Press Enter.
5. Follow the recovery instructions.

Maintenance and Safe Handling

Ventilation Maintenance

Keep the ventilation openings clear during computer operation.

Blocked airflow may cause excessive heat.

Storage Drive Protection

Before moving the laptop, allow it to shut down or enter Sleep Mode completely.

Wait until the Power indicator begins blinking when using Sleep Mode.

Moving the laptop while the hard disk is spinning can damage the drive.

External Storage Care

Use Windows Safely Remove Hardware and Eject Media before removing USB storage devices or memory cards.

System Backup

Use Lenovo OneKey Recovery to create backup images of the system partition while Windows is operating normally.

Backup images can be used during system recovery.

Memory and Internal Component Handling

Before replacing supported components:

1. Shut down the laptop.
2. Disconnect the AC adapter.
3. Disconnect external cables.
4. Remove the battery pack.
5. Follow the relevant component replacement procedure.

Discharge static electricity before handling memory modules or other sensitive electronic components.

Troubleshooting Guide

Common Problems and Solutions

Display Troubleshooting

Nothing Appears on the Screen During Startup

1. Confirm that the battery is installed correctly.
2. Check that the AC adapter is connected to the laptop.
3. Confirm that the power cord is plugged into a working electrical outlet.
4. Press the Power button again.
5. Verify that the memory is installed correctly.

If the screen remains blank after these checks, have the computer serviced.

White Cursor on a Blank Screen

If a white cursor appears on an otherwise blank screen, restore Windows using Lenovo OneKey Recovery.

If the white cursor remains after restoration, the computer requires service.

Screen Becomes Blank During Use

The screen saver or power management may have turned off the display.

Try the following:

1. Touch the touchpad.
2. Press any keyboard key.
3. Press the Power button.
4. Press F9 to check whether the LCD backlight is disabled.

Screen Is Too Dark

Press F12 to increase brightness.

If the Power indicator is blinking, press the Power button to wake the laptop.

Press F9 to check the LCD backlight.

Display Is Unreadable or Distorted

Check that:

• The display device driver is installed correctly.
• Screen resolution is configured correctly.
• Color quality settings are correct.
• The monitor type is correct.

Incorrect Characters Appear

Check that the operating system and installed applications are configured correctly.

If the problem continues after confirming the installation, have the laptop serviced.

Sleep Mode Troubleshooting

Critical Low-Battery Error

Connect the AC adapter or replace the battery pack with a fully charged compatible battery.

Computer Enters Sleep Immediately After Startup

Check that:

1. The battery is charged.
2. The operating temperature is within the acceptable range.

If both conditions are satisfactory, have the computer serviced.

Computer Does Not Resume from Sleep

1. Connect the AC power adapter.
2. Press a keyboard key or the Power button.
3. If the computer remains unresponsive, hold Power for at least four seconds.
4. If the system still does not reset, disconnect the AC adapter and remove the battery pack.

Attention: A forced shutdown may cause unsaved data to be lost.

Audio Troubleshooting

No Sound from the Speakers

If the speakers remain silent when volume is increased:

1. Confirm that Mute is turned off.
2. Check that no headset is connected to the audio jack.
3. Confirm that the internal speakers are selected as the playback device.

Battery Troubleshooting

Battery Indicator Shows an Incorrect Charge Level

If the computer shuts down before the battery indicator reaches empty, or operates after the indicator reports empty, discharge and recharge the battery pack.

Computer Does Not Work with a Fully Charged Battery

The surge-protection circuit in the battery pack may have activated.

1. Turn off the computer.
2. Leave it off for one minute.
3. Turn it on again.

Hard Disk Troubleshooting

Hard Disk Drive Does Not Work

1. Open BIOS Setup through the Novo button.
2. Select the Boot menu.
3. Confirm that the hard disk is correctly included in the Boot settings.

Lenovo OneKey Recovery Troubleshooting

System Backup Cannot Be Created

Check that Windows is running.

Confirm that sufficient free storage is available on the selected backup partition.

Backup Fails During Operation

1. Close all open applications.
2. Restart the backup process.
3. Check whether the destination storage device is damaged.
4. Select another destination if necessary.

Factory Recovery Cannot Be Completed

Factory recovery may fail if the system partition has been modified.

Changes to the partition size or C drive capacity can affect the recovery process.

Other Troubleshooting

Computer Does Not Respond

1. Press and hold the Power button for at least four seconds.
2. If the laptop remains unresponsive, disconnect the AC adapter and remove the battery.

The system may also stop responding if it enters Sleep Mode during a network communication operation.

Disable the sleep timer during network tasks that must not be interrupted.

Computer Does Not Start from a Selected Device

1. Open BIOS Setup.
2. Select the Boot menu.
3. Confirm that the required device is enabled and listed correctly.
4. Use the Novo Button Menu to choose the required startup device.

External Device Does Not Work

Check the accessory’s power requirements and connection.

High-power USB devices may require a separate power adapter.

Insufficient power can prevent device recognition or cause the computer to shut down.

BIOS Password Troubleshooting

Forgotten User Password

Ask the system administrator to clear the user password.

Forgotten Hard Disk Password

A Lenovo-authorized service provider cannot reset a forgotten hard disk password or recover the protected data.

The hard disk may need replacement.

Proof of purchase is required, and parts and service charges apply.

Forgotten Administrator Password

A Lenovo-authorized service provider cannot reset a forgotten administrator password.

The system board must be replaced through an authorized service provider or representative.

Proof of purchase is required, and parts and service charges apply.

Replacement Parts and Accessories

The Z40-70 includes customer-replaceable hardware components with documented replacement procedures.

Customer-Replaceable Components

Important: The thermal-fan replacement procedure in this combined guide applies to specified G50 and Z50 models, not the Z40-70.

Replacing the Battery Pack

The Z40-70 uses a removable battery pack secured by manual and spring-loaded latches.

Battery Replacement Instructions

1. Shut down the computer.
2. Disconnect the AC adapter and external cables.
3. Close the display.
4. Turn the laptop over.
5. Move the manual battery latch to the unlocked position.
6. Slide the spring-loaded latch to release the battery.
7. Lift the inner edge of the battery pack.
8. Pivot the battery on its outer edge and carefully remove it.
9. Install a compatible, fully charged replacement battery.
10. Move the manual latch to the locked position.
11. Turn the computer over.
12. Reconnect the AC adapter and external cables.

Warning: Use only an appropriate Lenovo-recommended battery pack. An incompatible battery could ignite or explode.

Replacing the Hard Disk Drive

The hard disk drive can be replaced when upgrading storage capacity or repairing the computer.

Back up important data before removing the drive.

Hard Disk Replacement Instructions

1. Turn off the laptop.
2. Disconnect the AC adapter and external cables.
3. Close the display and turn the laptop over.
4. Remove the battery pack.
5. Remove the screws securing the bottom hardware compartment cover.
6. Remove the cover.
7. Remove the hard disk frame retaining screws.
8. Pull the drive tab in the indicated direction to release the assembly.
9. Carefully lift out the hard disk drive and its metal frame.
10. Remove the screws securing the metal frame to the old drive.
11. Attach the frame to the replacement drive.
12. Position the replacement drive in the compartment with its tab facing upward.
13. Align the connectors and press the drive into place.
14. Reinstall the retaining screws.
15. Reattach the compartment cover.
16. Tighten the cover screws.
17. Reinstall the battery.
18. Reconnect the AC adapter and external cables.

Hard Disk Handling Precautions

• Do not drop the drive.
• Do not expose it to physical shocks.
• Do not apply pressure to the drive cover.
• Do not touch the drive connector.
• Never remove the drive while the computer is operating or sleeping.

The storage drive bay is intended for replacement during upgrades or repairs rather than frequent drive swapping.

A replacement drive does not include the computer’s original preinstalled software.

Replacing or Upgrading RAM

The Lenovo Z40-70 supports DDR3 SDRAM memory replacement.

Use only memory modules compatible with the computer.

Memory Replacement Instructions

1. Touch a grounded metal object to discharge static electricity.
2. Turn off the computer.
3. Disconnect the AC adapter and external cables.
4. Close the display and turn the laptop over.
5. Remove the battery pack.
6. Remove the hardware compartment cover.
7. Release the retaining latches on both sides of the memory socket.
8. Remove the installed DDR3 module.
9. Align the notch of the replacement module with the socket.
10. Insert the module at approximately a 30–45-degree angle.
11. Push the module into place until the retaining clips close.
12. Reinstall the compartment cover.
13. Tighten the screws.
14. Reinstall the battery.
15. Reconnect power and cables.

Memory Slot Placement

If only one DDR3 SDRAM module is installed, place it in SLOT-1, not SLOT-2.

Verifying Installed Memory

1. Shut down the laptop.
2. Press the Novo button.
3. Select BIOS Setup.
4. Find the System Memory value.

The System Memory field shows the installed memory amount.

If memory is unsupported or installed incorrectly, the computer may produce a warning beep at startup.

Replacing the Wireless LAN Card

The wireless LAN card can be replaced using the documented hardware procedure.

Wireless Card Replacement Instructions

1. Turn off the laptop.
2. Disconnect the AC adapter and all cables.
3. Close the display and turn the computer over.
4. Remove the battery pack.
5. Remove the bottom hardware compartment cover.
6. Disconnect the wireless antenna cables from the installed card.
7. Remove the card retaining screw.
8. Remove the wireless LAN card.
9. Insert a compatible replacement card.
10. Reinstall the retaining screw.
11. Reconnect the antenna cables.
12. Reinstall the compartment cover.
13. Reinstall the battery.
14. Reconnect power and external cables.

Wireless Antenna Cable Connections

Some configurations have only one black antenna cable. In those cases, connect the black cable to M (Main).

Replacing the Keyboard

The keyboard can be replaced using the documented access and connector procedure.

Keyboard Replacement Instructions

1. Shut down the computer.
2. Disconnect the AC adapter and external cables.
3. Close the display and turn the laptop over.
4. Remove the battery pack.
5. Remove the bottom hardware compartment cover.
6. Remove the keyboard retaining screws.
7. Release the keyboard from the area indicated in the hardware diagram.
8. Turn the laptop to its normal position.
9. Gently loosen and raise the keyboard.
10. Disconnect the keyboard ribbon connector.
11. Remove the old keyboard.
12. Connect the replacement keyboard.
13. Position the keyboard and press it gently until it clicks into place.
14. Close the display and turn the laptop over.
15. Reinstall the keyboard retaining screws.
16. Reattach the hardware compartment cover.
17. Tighten the remaining screws.
18. Reinstall the battery.
19. Reconnect the AC adapter and external cables.

Important: Confirm that the keyboard connector is firmly attached before reinstalling the keyboard.

Removing the Optical Drive

The integrated optical drive can be removed through the hardware compartment.

Optical Drive Removal Instructions

1. Shut down the laptop and disconnect power.
2. Remove the battery pack.
3. Remove the bottom hardware compartment cover.
4. Locate the optical drive retaining screw.
5. Remove the screw.
6. Carefully slide the optical drive out of the computer.

Warranty Information

The Lenovo Z40-70 is covered by the applicable Lenovo Limited Warranty.

The warranty period, service type, and coverage conditions are provided in the Safety, Warranty, and Setup Guide supplied with the computer.

Users should review that warranty documentation before requesting repair or replacement service.

Customer Support Information

Lenovo provides product support, hardware drivers, software downloads, and repair assistance.

Official Support Resources

Finding Lenovo Z40-70 Drivers

For configurations originally supplied with Windows, Lenovo provides hardware device drivers on the D partition of the hard disk.

Drivers can also be obtained through Lenovo Support.

Reinstalling Preinstalled Software

Installation programs for Lenovo preinstalled desktop software are stored on the D partition on supported original configurations.

If the required installation program is unavailable there, refer to Lenovo’s support resources.

Frequently Asked Questions

1. How do I enter BIOS on the Lenovo Z40-70?

Shut down the Lenovo Z40-70, press the Novo button, and select BIOS Setup. The BIOS Utility allows users to configure boot modes, startup devices, and keyboard hotkey settings.

2. How do I turn on Wi-Fi on the Lenovo Z40-70?

Press F7 to disable Airplane Mode, or use Fn + F7 when HotKey Mode is disabled. Open the Windows wireless network list, select the required network, and enter the password if prompted.

3. How do I reset the Lenovo Z40-70 to factory settings?

Turn off the laptop and press the Novo button. Select Lenovo OneKey Recovery System and follow the instructions to restore the system partition to its original factory state. Back up important files first because the recovery operation is irreversible.

4. How do I enable or disable the Lenovo Z40-70 touchpad?

Press F6 to enable or disable the touchpad. If HotKey Mode has been disabled in BIOS, press Fn + F6 instead.

5. Why is my Lenovo Z40-70 screen black?

Check the power connection and battery installation. Press F12 to increase brightness, press F9 to check the LCD backlight, and press the Power button if the computer is sleeping. If the display remains blank during startup, check memory installation and obtain service if necessary.

6. What type of RAM does the Lenovo Z40-70 use?

The Lenovo Z40-70 uses DDR3 SDRAM memory. When only one module is installed, it must be placed in SLOT-1. Use a compatible module and check the installed memory amount through BIOS Setup.

7. What does a blinking amber battery light mean on the Lenovo Z40-70?

A slowly blinking amber light while charging indicates that battery charge is below 20%. A rapidly blinking amber light indicates that the battery is below 5%, whether charging or discharging.