| Field | Details |
| Document Title | Lenovo User Guide |
| Document Type | User Guide |
| Brand Name | Lenovo |
| Product Name | Y40-70 Laptop |
| Model Number(s) | Y40-70, Y40-80, Y50-70, Y50-80, Y50-70 Touch, Y50-80 Touch |
| PDF File Size | 4 MB |
| Number of Pages | 38 |
| Languages | English |
Lenovo Y40-70 Laptop
The Lenovo Y40-70 is a notebook computer equipped with an integrated camera, noise-reducing microphones, JBL speakers, a one-piece multitouch touchpad, and a standard keyboard with function-key shortcuts. It supports wired and wireless networking, external displays, USB devices, and removable memory cards.
The computer includes HDMI, Ethernet, USB 3.0, a combination headset jack, and S/PDIF digital audio output. Its keyboard provides shortcuts for adjusting screen brightness, controlling volume, enabling or disabling the touchpad, changing display output, and accessing Windows functions.
The Lenovo Y40-70 also features a Novo button for accessing BIOS Setup, the boot menu, and Lenovo OneKey Recovery. The recovery software allows the system partition to be backed up and restored when the supported recovery environment is available.
Product Overview
The Lenovo Y40-70 combines standard notebook functions with multimedia and external connectivity features.
The built-in display provides visual output, while the integrated camera and microphones support video communication, voice recording, and conferencing. JBL speakers provide audio playback through the computer’s built-in sound system.
The laptop uses a one-piece multitouch ClickPad for pointer movement and mouse-button operations. The keyboard includes dedicated function-key combinations for system controls.
Main Features
- Integrated computer display.
- Built-in camera for video communication and photographs.
- Built-in microphones with noise reduction.
- Wireless LAN antennas.
- JBL speakers.
- Standard keyboard with function keys.
- Optional keyboard backlighting.
- One-piece multitouch ClickPad.
- Dedicated Power button.
- Novo button for BIOS, boot, and recovery functions.
- RJ-45 Ethernet connection.
- HDMI external display output.
- Three USB ports.
- USB 3.0 support.
- Combination audio jack.
- S/PDIF digital audio output.
- SD and MMC memory card support.
- Kensington security lock slot.
- Power and battery status indicators.
- Lenovo OneKey Recovery System.
- UEFI and Legacy Support boot modes.
Supported Models and Machine Types
The user guide applies to several Lenovo notebook configurations.
| Model | Machine Type |
| Lenovo Y40-70 | 20347, 80DR |
| Lenovo Y40-80 | 20399, 80FA |
| Lenovo Y50-70 | 20378, 80EJ |
| Lenovo Y50-80 | 20401, 80FC |
| Lenovo Y50-70 Touch | 20349, 80DT |
| Lenovo Y50-80 Touch | 20402, 80FD |
The Y40-70 and Y40-80 have the keyboard and component layout shown for the Y40 family. The Y50 models have a separate numeric keypad, and the Y50 Touch versions include touch-specific hardware configurations.
Technical Specifications
General Specifications
| Specification | Details |
| Brand | Lenovo |
| Model | Y40-70 |
| Machine Types | 20347, 80DR |
| Product Type | Notebook Computer |
| Display | Integrated Computer Display |
| Camera | Integrated |
| Microphones | Built-In, with Noise Reduction |
| Speakers | JBL |
| Keyboard | Standard Keyboard with Function Keys |
| Keyboard Backlight | Selected Configurations |
| Pointing Device | One-Piece Multitouch ClickPad |
| Wireless Networking | Wireless LAN |
| Wired Networking | RJ-45 Ethernet |
| Video Output | HDMI |
| USB Connectivity | USB 3.0 |
| Number of USB Ports | 3 |
| Audio Connections | Combination Audio Jack, S/PDIF |
| Memory Card Support | SD, MMC |
| Security | Kensington Lock Slot |
| Recovery Software | Lenovo OneKey Recovery |
| BIOS Boot Modes | UEFI, Legacy Support |
| Operating System Covered | Windows 8.1 |
USB Connectivity
| Specification | Details |
| Number of USB Ports | 3 |
| USB 3.0 Identification | Red-Colored USB Port |
| USB Device Recognition | Windows Automatic Driver Installation |
| USB Storage Removal | Safely Remove Hardware and Eject Media |
Audio and Display Connections
| Connector | Function |
| HDMI | Connects a compatible television or external monitor |
| Combo Audio Jack | Connects a compatible headset |
| S/PDIF | Provides digital audio output to compatible devices |
Memory Card Specifications
| Card Type | Supported |
| Secure Digital (SD) | Yes |
| MultiMediaCard (MMC) | Yes |
| SDIO Devices | No |
Only one memory card should be used in the card reader at a time.
Parts and Components
Top Components
The top of the Lenovo Y40-70 contains the main display, camera, microphones, speakers, controls, keyboard, and touchpad.
| Component | Function |
| Integrated Camera | Captures photographs and video |
| Built-In Microphones | Record speech and other sounds |
| Wireless LAN Antennas | Send and receive wireless network signals |
| Computer Display | Displays images, applications, and video |
| Ventilation Slots | Release internal heat |
| JBL Speakers | Produce audio output |
| Power Button | Turns on the computer |
| Novo Button | Opens recovery and startup options |
| Touchpad | Controls the pointer and performs mouse actions |
Integrated Camera
The camera supports video communication and photography.
It can be used with compatible applications that require camera input.
Built-In Microphones
The integrated microphones capture sound for:
- Video conferencing.
- Voice narration.
- Audio recording.
Noise reduction is included in the microphone system.
Wireless LAN Antennas
The internal antennas transmit and receive wireless networking signals.
They allow the computer’s wireless LAN adapter to communicate with compatible wireless networks.
JBL Speakers
The integrated JBL speakers provide sound output from applications, videos, system notifications, and other audio content.
Power Button
Press the Power button to turn on the computer.
When Windows is running, pressing the Power button can place the computer into sleep mode.
Novo Button
The Novo button provides access to startup and recovery functions.
When the computer is turned off or in hibernation, pressing Novo can open:
- Lenovo OneKey Recovery.
- BIOS Setup Utility.
- Boot Menu.
Ventilation Slots
The ventilation slots allow heat generated by the computer’s internal components to escape.
Important: Keep the ventilation slots unobstructed. Blocked airflow may cause overheating.
Using the Touchpad
The Lenovo Y40-70 uses a one-piece multitouch ClickPad.
Moving the Pointer
- Place a fingertip on the touchpad.
- Slide the fingertip in the required direction.
- The on-screen pointer moves accordingly.
Left-Click
Press the designated left-click area of the touchpad.
This performs the same function as the left mouse button.
Right-Click
Press the designated right-click area.
This performs the same function as the right mouse button.
Enabling or Disabling the Touchpad
Press Fn + F6.
The touchpad can be disabled when an external pointing device is preferred.
Left-Side Ports and Connectors
The left side provides power, network, display, and USB connections.
| Component | Function |
| AC Power Adapter Jack | Connects the computer to its power adapter |
| RJ-45 Ethernet Port | Provides wired networking |
| HDMI Port | Connects a compatible external display |
| USB Ports | Connect compatible USB peripherals |
AC Power Adapter Jack
Connect the computer’s compatible AC power adapter to the dedicated power jack.
RJ-45 Ethernet Port
The Ethernet connector allows the computer to connect to a wired network.
Its protective cover moves downward when a suitable Ethernet connector is inserted.
HDMI Port
The HDMI connector supports compatible devices with an HDMI input, including televisions and external monitors.
USB Ports
The computer has USB ports for connecting compatible accessories.
The red-colored USB port supports USB 3.0.
Right-Side Ports and Connectors
The right side includes the memory card slot, audio connections, USB port, and security lock slot.
| Component | Function |
| Memory Card Slot | Accepts compatible SD and MMC cards |
| Combo Audio Jack | Connects a compatible headset |
| S/PDIF Jack | Connects digital audio equipment |
| USB Port | Connects compatible USB devices |
| Kensington Lock Slot | Accepts a compatible security cable |
Combination Audio Jack
The combo audio connector 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 differences between audio connector standards.
S/PDIF Digital Audio Jack
The S/PDIF connection provides digital audio output to compatible equipment.
Kensington Lock Slot
A compatible Kensington security lock can be connected to the laptop to help protect it against unauthorized removal.
Check the lock’s compatibility with the computer’s security slot before purchasing it.
Front and Bottom Components
Front Status Indicators
The front edge includes indicators that show:
- Power status.
- Battery status.
- Touchpad status.
- Hard disk drive activity.
Bottom Ventilation Louvers
The bottom panel contains ventilation louvers.
These openings allow cooling air to enter the computer.
Keep the louvers unobstructed during operation.
Power and Battery Status Indicators
Power Indicator
| Indicator Status | Meaning |
| Solid White | Computer is powered on |
| Blinking | Computer is in sleep mode |
| Off | Computer is powered off |
Battery Indicator
| Indicator Status | Battery Condition | Meaning |
| Solid White | Charging | Charge is above 80% |
| Solid White | Discharging | Charge is above 20% |
| Solid Amber | Discharging | Charge is between 5% and 20% |
| Slowly Blinking White | Charging | Charge is between 20% and 80% |
| Slowly Blinking Amber | Charging | Charge is below 20% |
| Rapidly Blinking Amber | Charging or Discharging | Charge is below 5% |
Battery Charging Light 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 battery reaches 80%, the white indicator stops blinking, although the battery continues charging until full.
A rapidly blinking amber indicator shows that the charge is below 5%.
Touchpad Indicator
| Indicator | Meaning |
| Solid White | Touchpad is disabled |
| Off | Touchpad is enabled |
Hard Disk Drive Indicator
A blinking hard disk indicator means the storage drive is reading or writing data.
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 keyboard and screen can damage the display panel.
Ventilation Safety
Keep the computer’s ventilation slots and bottom cooling openings clear.
Blocked ventilation can cause overheating.
Electrical and Power Safety
Read the Lenovo Safety and General Information Guide before operating the computer.
Use suitable power connections and follow the supplied electrical safety instructions.
USB Device Safety
Some USB devices require their own external power supply.
If a USB device uses a power cord, connect the device to its power source before connecting it to the laptop.
Otherwise, the computer may fail to recognize the accessory.
Before First Use
Connecting the Computer to Power
- Place the computer on a stable surface.
- Locate the AC power adapter jack on the left side.
- Connect the compatible AC power adapter.
- Connect the adapter to an electrical outlet.
- Press the Power button.
First-Time Windows Configuration
The initial Windows 8.1 setup process may include:
- Accepting the end-user license agreement.
- Configuring an Internet connection.
- Registering the operating system.
- Creating a user account.
Follow the instructions displayed by Windows to complete the setup.
Keyboard Shortcuts and Function Keys
The Lenovo Y40-70 keyboard includes shortcuts for display controls, volume, sleep mode, wireless settings, and Windows navigation.
Hold the Fn key while pressing the required function key.
Function Key Shortcuts
| Shortcut | Function |
| Fn + F1 | Enters sleep mode |
| Fn + F2 | Turns the LCD backlight on or off |
| Fn + F3 | Opens display selection options |
| Fn + F5 | Enables or disables Airplane Mode |
| Fn + F6 | Enables or disables the touchpad |
| Fn + F9 | Opens the Settings charm |
| Fn + F10 | Opens the Search charm |
| Fn + F11 | Displays currently running apps |
| Fn + PrtSc | Activates System Request |
| Fn + PgUp | Enables or disables Scroll Lock |
| Fn + Home | Activates Pause |
| Fn + End | Activates Break |
| Fn + PgDn | Activates Insert |
| Fn + Up Arrow | Increases screen brightness |
| Fn + Down Arrow | Decreases screen brightness |
| Fn + Right Arrow | Increases volume |
| Fn + Left Arrow | Decreases volume |
| Fn + Space | Adjusts keyboard backlighting on selected models |
Adjusting Screen Brightness
To increase brightness, press Fn + Up Arrow.
To decrease brightness, press Fn + Down Arrow.
Adjusting Sound Volume
- Fn + Right Arrow: Increase volume.
- Fn + Left Arrow: Decrease volume.
Turning the LCD Backlight On or Off
Press Fn + F2.
This shortcut can also help identify whether a blank screen is caused by the LCD backlight being turned off.
Using Keyboard Backlighting
Selected Y40-70 configurations support keyboard backlighting.
Press Fn + Space to cycle through:
- Off.
- Dim.
- Bright.
- Off.
Using Windows 8.1
Windows 8.1 provides two main interfaces:
- Start screen.
- Windows desktop.
Switching to the Desktop
From the Start screen:
- Select the Desktop tile.
Alternatively, press Windows + D.
Switching to the Start Screen
Use one of the following methods:
- Press the Windows key.
- Open the Charms bar and select Start.
- 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 system functions from different applications.
Opening the Charms Bar
Use either method:
- Move the pointer to the upper-right or lower-right corner.
- Press Windows + C.
Charms and Their Functions
| Charm | Function |
| Search | Searches settings, files, web images, and other content |
| Share | Shares supported content through compatible applications |
| Start | Opens the Windows Start screen |
| Devices | Connects to or sends content to external devices |
| Settings | Provides power, volume, Control Panel, and other settings |
Search Charm
Press Fn + F10 to open the Search charm.
Settings Charm
Press Fn + F9 to open the Settings charm.
Displaying Current Apps
Press Fn + F11 to display currently running applications.
Sleep Mode and Shutdown
Putting the Laptop to Sleep
Sleep mode reduces power consumption while allowing the computer to resume operation without a complete startup.
Use one of these methods:
- Close the display lid.
- Press the Power button.
- Open Settings > Power > Sleep.
- Press Fn + F1.
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 any key on the keyboard.
- Press the Power button.
Shutting Down Windows 8.1
Use either of the following procedures.
Method 1: Charms Bar
- Open the Charms bar.
- Select Settings.
- Select Power.
- Click Shut down.
Method 2: Start Button
- Right-click or press and hold the Start button.
- Select Shut down or sign out.
- Select Shut down.
Shutting down is appropriate when the computer will not be used for an extended period.
Connecting to Wi-Fi
The laptop supports wireless networking through its wireless LAN adapter.
Enabling Wireless Networking
- Press Fn + F5 to disable Airplane Mode.
Alternatively:
- Open the Charms bar.
- Select Settings.
- Open the network configuration page.
- Set Airplane Mode to Off.
Connecting to a Wireless Network
- Enable wireless networking.
- Open the list of available wireless networks.
- Select the required network.
- Click Connect.
- Enter the security key or passphrase if prompted.
Windows automatically scans for available networks after wireless connectivity is enabled.
For protected networks, obtain the required security information from the network administrator or Internet service provider.
Connecting an Ethernet Cable
The Y40-70 includes an RJ-45 Ethernet connector on the left side.
Ethernet Connection Instructions
- Locate the Ethernet port.
- Hold the network cable connector.
- Gently use the connector to press down the protective port cover.
- Insert the connector into the RJ-45 port.
- Configure the network according to the Internet service provider’s instructions.
Connecting USB Devices
The Lenovo Y40-70 has three USB ports for connecting compatible external devices.
Connecting a USB Device
- Locate an available USB port.
- Connect the device.
- Allow Windows to detect the device.
- Complete driver installation if required.
Windows normally installs a compatible device driver automatically the first time a USB device is connected to a particular port.
Some USB accessories require driver installation before the device is connected.
Follow the accessory manufacturer’s instructions when such installation is required.
Removing USB Storage Safely
Before disconnecting a USB storage device:
- Finish transferring files.
- Open Safely Remove Hardware and Eject Media from the Windows notification area.
- Select the USB device.
- Disconnect it after Windows indicates it is safe.
USB Devices with External Power
If an external USB accessory has its own power cord, connect that accessory to its power source before connecting it to the computer.
This helps prevent device-recognition problems.
Connecting External Displays
The Y40-70 provides an HDMI connection for compatible displays.
HDMI Connection
- Connect a compatible HDMI cable to the laptop.
- Connect the other end to the external monitor or television.
- Turn on the external display.
- Press Fn + F3 to open display selection.
- Choose the required display output.
Connecting Audio Devices
Using a Headset
Connect a compatible headset to the combination audio jack.
A headset with an incompatible connector standard may not support recording through the laptop.
Digital Audio Output
The S/PDIF jack connects to compatible digital audio devices.
Use a suitable S/PDIF connection with equipment that supports the required digital audio input.
Using Memory Cards
The Lenovo Y40-70 supports SD and MMC memory cards.
Supported Memory Cards
| Memory Card | Support |
| Secure Digital (SD) | Yes |
| MultiMediaCard (MMC) | Yes |
| SDIO Devices | No |
Inserting a Memory Card
- Locate the card reader on the right side.
- Insert a compatible memory card.
- Push it inward until it clicks into place.
Removing a Memory Card
- Use Windows Safely Remove Hardware and Eject Media.
- Push the card inward until it clicks.
- Gently pull the card out.
Only one memory card should be inserted at a time.
Using the safe-removal function helps prevent data corruption.
Lenovo Novo Button
The Novo button provides access to recovery and startup functions.
It can be used when the computer is turned off or in hibernation.
Opening the Novo Button Menu
- Shut down the computer.
- Press the Novo button.
- Select the required function.
Novo Button Functions
| Function | Purpose |
| BIOS Setup | Opens firmware configuration |
| Boot Menu | Selects a startup device |
| System Recovery | Opens Lenovo OneKey Recovery |
BIOS Setup Instructions
The BIOS Setup Utility displays basic computer information and provides options for hardware, security, and startup configuration.
Entering BIOS Setup
- Turn off the computer.
- Press the Novo button.
- Select BIOS Setup.
Changing Boot Mode
The computer supports UEFI and Legacy Support startup modes.
| Boot Mode | Function |
| UEFI | Default boot mode |
| Legacy Support | Supports installation of compatible legacy operating systems |
To change boot mode:
- Open BIOS Setup.
- Select the Boot menu.
- Locate the Boot Mode setting.
- Choose UEFI or Legacy Support.
- Save the changes.
The guide specifies Legacy Support for installing older operating systems predating Windows 8, including compatible legacy Windows, Linux, or DOS systems.
Selecting a Startup Device
- Turn off the computer.
- Press the Novo button.
- Select Boot Menu.
- Choose the required startup device.
Lenovo OneKey Recovery System
Lenovo OneKey Recovery provides backup and system restoration functions.
The software can save a backup image of the system partition and restore the partition to its original factory state or a previously created backup.
Recovery Partition
The computer’s hard disk includes a hidden recovery partition containing the system image and OneKey Recovery program files.
This partition uses storage space, so the capacity available to Windows may appear lower than the drive’s stated capacity.
The OneKey Recovery System is unavailable on configurations preinstalled with GNU/Linux or DOS.
Backing Up the System Partition
- Start Windows normally.
- Press the Novo button to launch Lenovo OneKey Recovery.
- Select System Backup.
- Choose a backup location.
- Click Next.
- Allow the backup process to finish.
Backup images can be stored on the local hard disk or an external storage device.
Important: If a removable hard disk drive is installed, remove it before starting OneKey Recovery. Otherwise, data on the removable drive may be lost.
System Backup requires Windows to start normally.
Restoring the System Partition
- Open Lenovo OneKey Recovery using the Novo button.
- Select System Recovery.
- Allow the computer to restart into the recovery environment.
- Follow the on-screen instructions.
- Restore the original system state or a previously created backup point.
Warning: System recovery is irreversible. Back up important files from the system partition before starting.
Keep the AC power adapter connected during recovery.
Starting Recovery When Windows Cannot Boot
- Shut down the computer.
- Press the Novo button.
- Select System Recovery from the Novo Button Menu.
- Press Enter.
- Follow the recovery instructions.
Device Drivers and Preinstalled Software
Finding Preinstalled Software
Lenovo preinstalled software installation programs are stored on the D partition of the computer’s hard disk.
These installation files can be used when the original applications need to be reinstalled.
Finding Hardware Drivers
For configurations preinstalled with Windows, Lenovo provides the required hardware device drivers on the D partition.
Drivers are also available through Lenovo Support:
Maintenance and Safe Handling
Ventilation Maintenance
Keep all ventilation openings unobstructed.
The bottom louvers allow cooling air to enter the computer, while the ventilation slots release internal heat.
Hard Disk Protection
Before moving the computer, allow it to enter sleep mode completely or shut it down.
The Power indicator should begin blinking when sleep mode is active.
Moving the computer while the hard disk is spinning can damage the drive.
External Storage Care
Always use Windows Safely Remove Hardware and Eject Media before removing USB storage devices or memory cards.
This helps protect stored files.
System Backup
Use Lenovo OneKey Recovery to create a system backup while Windows is operating normally.
A previously created backup can be used during system recovery.
Troubleshooting Guide
Common Problems and Solutions
| Problem | Recommended Action |
| Nothing appears on the screen after startup | Check AC power, Power button, and memory installation |
| White cursor appears on a blank screen | Restore Windows using OneKey Recovery |
| Screen becomes blank during operation | Wake the computer or check the LCD backlight |
| Display is unreadable or distorted | Check display drivers, resolution, color quality, and monitor type |
| Incorrect characters appear | Check the operating system and installed applications |
| Critical low-battery warning appears | Connect the AC power adapter |
| Computer enters sleep immediately after startup | Check battery charge and operating temperature |
| Computer does not resume from sleep | Connect AC power and attempt to wake or reset |
| No sound from speakers | Check mute status, audio connection, and playback device |
| Battery level appears inaccurate | Discharge and recharge the battery |
| Battery operating time is short | Discharge and recharge the battery |
| Computer does not operate with a charged battery | Turn it off for one minute to reset the battery surge protector |
| Hard disk drive does not work | Check the drive’s inclusion in the BIOS Boot menu |
| OneKey Recovery backup fails | Check Windows operation and available backup space |
| Factory recovery fails | Check whether the system partition was modified |
| Computer does not respond | Hold Power for four seconds or longer |
| Computer does not start from the selected device | Check the BIOS Boot menu or use the Novo Boot Menu |
| External device does not work | Check its connection and external power requirements |
Nothing Appears on the Screen
If the laptop powers on but the screen remains blank:
- Confirm that the AC power adapter is connected.
- Check that the electrical outlet works.
- Press the Power button to confirm the computer is on.
- Verify that the memory is installed correctly.
If the computer remains blank after these checks, obtain service.
White Cursor on a Blank Screen
If a white cursor appears on an otherwise blank screen, use Lenovo OneKey Recovery to restore Windows from a backup or restore the original factory system.
If the white cursor remains afterward, the computer requires service.
Screen Becomes Blank During Use
The screen saver or power management may have turned off the display.
Try the following:
- Touch the touchpad.
- Press any keyboard key.
- Press the Power button.
- Press Fn + F2 to check the LCD backlight.
Screen Is Dark
- Press Fn + Up Arrow to increase brightness.
- If the Power indicator is blinking, press the Power button to resume from sleep.
- Press Fn + F2 to check the LCD backlight.
Display Is Unreadable or Distorted
Check the following:
- 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 whether the operating system and installed programs are configured correctly.
If they are correctly installed and the problem continues, have the computer serviced.
Sleep Mode Troubleshooting
Critical Low-Battery Error
If the laptop displays a critical low-battery warning and immediately shuts down, connect the AC power adapter.
Computer Enters Sleep Immediately After Startup
Check that:
- The battery is charged.
- The operating temperature is within the accepted range.
If both conditions are satisfactory, the computer requires service.
Computer Does Not Wake from Sleep
- Connect the AC power adapter.
- Press any key or the Power button.
- If the computer remains unresponsive, hold the Power button for four seconds or longer.
- If the computer still cannot be reset, disconnect the AC adapter.
Attention: A forced shutdown can cause unsaved data to be lost.
Audio Troubleshooting
No Sound from the Speakers
If the speakers do not produce sound even when the volume is increased:
- Confirm that Mute is off.
- Check whether a headset is connected to the audio jack.
- Confirm that the internal speakers are selected as the playback device.
Battery Troubleshooting
Battery Indicator Is Inaccurate
If the computer shuts down before the indicator reaches empty, or operates after the indicator reports empty, discharge and recharge the battery.
Battery Operating Time Is Short
Discharge and recharge the battery pack.
Computer Does Not Operate with a Fully Charged Battery
The battery’s surge protector may be active.
- Turn off the computer.
- Leave it turned off for one minute.
- Turn it on again.
Hard Disk Troubleshooting
Hard Disk Drive Does Not Work
- Open BIOS Setup using the Novo button.
- Select the Boot menu.
- Confirm that the hard disk drive is included correctly in the startup device configuration.
OneKey Recovery Troubleshooting
System Backup Cannot Be Created
Check that Windows is running.
Make sure sufficient free space is available on the selected backup partition.
Backup Fails During the Process
- Close all open programs.
- Restart the backup process.
- Check whether the destination storage device is damaged.
- Select another backup location 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
- Press and hold the Power button for at least four seconds.
- If the laptop remains unresponsive, disconnect the AC power adapter.
The computer may also become unresponsive if it enters sleep mode during a network communication operation.
Disable the sleep timer when carrying out network tasks that should not be interrupted.
Computer Does Not Boot from the Selected Device
- Open BIOS Setup.
- Select the Boot menu.
- Confirm that the required startup device is enabled and included.
- Check the startup device selection.
- Use the Novo Button Menu to select the required device when necessary.
External Device Does Not Work
Do not connect or disconnect non-USB external device cables while the computer is powered on.
For high-power USB accessories, use the accessory’s external power adapter.
An accessory without sufficient power may fail to be recognized or cause the system to shut down.
BIOS Password Problems
Forgotten User Password
Contact the system administrator to clear the user password.
Forgotten Hard Disk Password
Lenovo-authorized service personnel cannot reset a forgotten hard disk password or recover the protected data.
The hard disk may need to be replaced by an authorized Lenovo service provider.
Proof of purchase is required, and parts and service charges apply.
Forgotten Administrator Password
Lenovo-authorized service personnel cannot reset a forgotten administrator password.
The system board must be replaced through an authorized Lenovo service provider or representative.
Proof of purchase is required, and parts and service fees apply.
Warranty Information
The Lenovo Y40-70 is subject to the applicable Lenovo warranty supplied with the computer.
The Safety, Warranty, and Setup Guide contains information about the warranty period and available warranty service.
Users should review the supplied warranty documentation before requesting repair or replacement service.
Customer Support Information
Lenovo provides product support, hardware drivers, documentation, and assistance with service issues.
Official Support Resources
| Resource | Website |
| Lenovo Support | https://support.lenovo.com |
| Lenovo Official Website | https://www.lenovo.com |
| Lenovo Compliance Information | https://www.lenovo.com/compliance |
| Lenovo Environmental Information | https://www.lenovo.com/ecodeclaration |
For service and technical assistance, refer to the Getting Help and Service chapter of the Lenovo Safety and General Information Guide.
Frequently Asked Questions
1. How do I enter BIOS on the Lenovo Y40-70?
Turn off the laptop, press the Novo button, and select BIOS Setup from the menu.
2. How do I reset the Lenovo Y40-70 to factory settings?
Press the Novo button and open System Recovery. Follow the Lenovo OneKey Recovery instructions to restore the system partition to its original state. Back up important data before starting because the recovery process is irreversible.
3. How do I turn on Wi-Fi on the Lenovo Y40-70?
Press Fn + F5 to disable Airplane Mode. Open the Windows wireless network list, select the required network, and enter the password if prompted.
4. How do I turn on the Lenovo Y40-70 keyboard backlight?
On supported configurations, press Fn + Space to cycle between Off, Dim, and Bright keyboard illumination.
5. How do I enable or disable the Lenovo Y40-70 touchpad?
Press Fn + F6. The touchpad indicator shows solid white when disabled and turns off when enabled.
6. Why is my Lenovo Y40-70 screen black?
Check the AC power connection, press Fn + Up Arrow to increase brightness, and use Fn + F2 to check whether the LCD backlight is off. If the Power indicator is blinking, press the Power button to wake the computer.
7. What should I do if my Lenovo Y40-70 does not wake from sleep?
Connect the AC adapter and press a keyboard key or the Power button. If the computer remains unresponsive, hold the Power button for at least four seconds. Unsaved work may be lost.




