Lenovo 11E 20D9 20DA Hardware Maintenance Manual

To reset your Lenovo 11E 20D9 20DA to factory settings, go to Settings > Update & Security > Recovery. Under "Reset this PC", click "Get started" and choose the preferred option to reset your device.
If your laptop is not turning on, check if the battery is charged or connect it to a power source. Try holding down the power button for 10 seconds to force a restart. If the issue persists, remove any external devices and attempt to power on again.
To improve battery life, reduce screen brightness, close unnecessary applications, and disable Bluetooth and Wi-Fi when not in use. Additionally, consider using the "Battery Saver" mode available in Windows settings.
To update the BIOS, visit the Lenovo Support website, download the latest BIOS update for your model, and follow the instructions provided. Ensure your laptop is connected to a power source during the update process.
First, ensure the touchpad is enabled by pressing the appropriate function key (usually F6 or F8). Check the touchpad settings in the Control Panel and update the touchpad driver via the Device Manager.
Connect your external display using an HDMI cable or a compatible adapter. Once connected, press Windows + P to select the desired display mode, such as "Duplicate" or "Extend".
Ensure the laptop vents are not blocked and clean any dust using compressed air. Place the laptop on a hard, flat surface and consider using a cooling pad. Check for power settings that might be causing excessive heat.
To upgrade the RAM, first turn off the laptop and remove the battery. Unscrew and remove the back cover to access the RAM slots. Carefully insert the new RAM module and reassemble the laptop. Ensure compatibility before purchasing the RAM.
Check if the Wi-Fi is enabled and airplane mode is off. Restart the router and your laptop. Update the network adapter driver through the Device Manager and use the Windows Network Troubleshooter for assistance.
Back up important data and create a bootable Windows USB drive. Boot from the USB by changing the boot order in the BIOS. Follow the on-screen instructions to delete existing partitions and install a fresh copy of Windows.