Turn off the device and unplug it
Remove the keycap if it is removable
Blow out dust and debris with compressed air
Clean around the key with a soft brush
Wipe the key and surrounding area with a lint-free cloth lightly dampened with isopropyl alcohol
Let everything dry completely
Reattach the keycap securely
Test the key for smooth movement
Repeat cleaning if the key still sticks
Replace the keyboard if the key remains unresponsive or damaged