Use these procedures to resolve a Lenovo ThinkPad A485 keyboard problem:[br]
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1. Turn off the external keyboard, connect it to a wireless device, restart the laptop, and adjust the keyboard layout and language.[br]
2. Remove the sticky keys, update or reinstall the driver keyboard, and uninstall the filter keys.[br]
3. Check the keyboard's functionality by restarting the laptop and accessing the BIOS.[br]
4. Whether the internal keyboard is broken or not, use a USB keyboard or an external keyboard.[br]
5. Look for signs of hardware damage, like broken keyboards or loose, long cables.[br]
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Please don't hesitate to seek help if you have any more queries or worries.