A keyboard is one of the most-used input devices connected to a computer. Along with the letter and number keys, people also frequently use the arrow keys. Many things can cause the keys on a keyboard to malfunction. The keyboard can get dirty, the keys can stick or you can spill food or drink onto the keyboard. Whatever the reason there are a few different things you can do to get the up and down arrow keys working again.
Things You'll Need
- Flathead screwdriver
- Can of compressed air
- Damp washcloth
Place the tip of a flat-head screwdriver underneath the up arrow key and gently pry the key off the keyboard. Set the key aside. Pry off the down arrow key in the same way and set aside. Look at the space left by both keys to see whether food, hair, dust or anything else was preventing the keys from properly working. If you see anything, remove it. Place each key back into its proper space on the keyboard and firmly press down until each key locks back into place. Test the up and down arrow keys to see whether they now work.
Clean your entire keyboard with a can of compressed air to remove any dust, hair or pet dander that may prevent any of your keyboard keys from working. Place the skinny straw that comes with the compressed air into the nozzle of the can. Press lightly down on the trigger of the can to emit short spurts of compressed air. Direct the end of the straw between the keys on the keyboard to blow out the debris from underneath the keys. Take a damp washcloth and gently wash the keyboard with it to remove any dust that flew out from underneath the keys. Test your up and down arrow keys to see whether they work.
Unplug the keyboard from the computer, if you think soda or any other type of sticky food or liquid has dried and is jamming the up and down arrow keys. Run the unplugged keyboard under a faucet of hot water to ensure the water has penetrated between all of the keys. Allow the keyboard to completely air dry. Plug the keyboard back into the computer and test the up and down arrow keys to see whether they work properly.
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