How to Clean a Dirty Keyboard
Shut down the computer and detach the keyboard.
Turn the keyboard upside down and use a can of compressed air to blow out any foreign matter.
Clean the sides of the keys with a cotton swab dipped in isopropyl alcohol.
For a more thorough cleaning, remove all of the keys (TIP: I take a picture of my keyboard so I remember how they go back). Gently pry up each key with a small screwdriver or a similar device. After all the keys have been removed, blow out any debris with compressed air. With a moist (but not wet) cloth, lightly wipe all surfaces. Do not allow any type of fluid to enter the keyboard.
Clean the individual keys and place them back in the keyboard.
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