Lenovo IdeaPad S740-15IRH Touch Hardware Maintenance Manual
![Lenovo IdeaPad S740-15IRH Touch Laptop manual cover](/images/jUPnSbYaRUpNUfDFGCqhmsKz/thumbs/thumb175x175.webp)
To perform a factory reset, go to 'Settings' > 'Update & Security' > 'Recovery'. Under 'Reset this PC', click 'Get started' and choose 'Remove everything' for a full reset. Follow the on-screen instructions to complete the process.
First, ensure the laptop is charged by connecting the charger and checking the power indicator light. If it still won't turn on, perform a hard reset by pressing and holding the power button for 10-15 seconds. If the issue persists, contact Lenovo support for further assistance.
Visit the Lenovo Support website and enter your laptop model. Download the latest drivers available, and follow the installation instructions. Alternatively, use 'Lenovo Vantage' software to automatically check and update drivers.
Use a soft, lint-free microfiber cloth dampened with water or a 50/50 solution of water and isopropyl alcohol. Gently wipe the screen in a circular motion to remove smudges and fingerprints. Avoid using abrasive materials or spray cleaning solutions directly on the screen.
To extend battery life, reduce screen brightness, close unnecessary applications, and disconnect peripherals when not in use. Use the 'Battery Saver' mode available in 'Settings' > 'System' > 'Battery'. Regularly check for system and driver updates that may improve efficiency.
Connect the external monitor using an HDMI or USB-C cable. Press 'Windows + P' to open the 'Project' menu and select the desired display mode (e.g., Duplicate, Extend). Ensure the external display is powered on and set to the correct input.
First, restart the laptop to refresh the system. If the issue persists, update the touch screen driver via 'Device Manager'. Go to 'Human Interface Devices', right-click 'HID-compliant touch screen', and select 'Update driver'. If necessary, run hardware diagnostics using 'Lenovo Vantage'.
Consult the user manual for specific instructions and compatible RAM modules. Power off the laptop and unplug all cables. Use a screwdriver to remove the bottom cover. Carefully remove existing RAM and insert new modules, ensuring they are properly seated. Reattach the cover and power on the laptop.
To calibrate the battery, first charge it to 100% and then let it discharge completely until the laptop shuts off. Recharge the battery to 100% without interruption. Repeat this process every few months to maintain battery accuracy and longevity.
To enable or disable the touchpad, go to 'Settings' > 'Devices' > 'Touchpad'. Use the toggle to turn the touchpad on or off. Alternatively, some models may have a function key combination (e.g., Fn + F6) to quickly toggle the touchpad.