Lenovo ThinkPad X390 Yoga Hardware Maintenance Manual
![Lenovo ThinkPad X390 Yoga Laptop manual cover](/images/xbNVpXkOKPDpwAbMKWGJFlRW/thumbs/thumb175x175.webp)
To perform a factory reset, restart your laptop and press the 'F11' key during boot to access the recovery options. Select 'Troubleshoot' > 'Reset this PC' and follow the prompts to reset your device to factory settings.
Firstly, ensure that the power cable and adapter are properly connected. Try using a different power outlet. If the issue persists, check for any visible damage on the charger or port and consider testing with another compatible charger.
Visit the Lenovo Support website and download the latest BIOS update for your model. Follow the included instructions to install the update, ensuring your laptop is plugged in throughout the process.
Connect the external monitor via HDMI or USB-C port. Press 'Windows + P' and select the desired display mode (e.g., Duplicate, Extend). Ensure the monitor is powered on and set to the correct input source.
Reduce screen brightness, disable unnecessary background apps, and use battery saver mode. Regularly update your system and drivers, and consider adjusting power settings for optimal performance.
Turn off the laptop and unplug it. Use compressed air to remove debris between keys. Wipe the keyboard with a slightly damp, lint-free cloth. Avoid using excessive moisture or harsh chemicals.
Touch screen functionality is typically enabled by default. If it's not working, ensure the device drivers are up to date. Go to Device Manager, expand 'Human Interface Devices', and make sure the touch screen is enabled.
Run a virus/malware scan, clear temporary files, and uninstall unnecessary programs. Consider upgrading RAM if performance issues persist. Regularly check for software updates and optimize startup programs.
Click on the network icon in the taskbar, select the desired Wi-Fi network, and click 'Connect'. Enter the network password if prompted. Ensure Wi-Fi is enabled on your device.
Use an external hard drive or cloud storage service to regularly back up important files. Consider using Lenovo Vantage or Windows built-in backup tools for scheduled backups.