Solve the problem that the letter of a key in laptop (I) cannot be pressed

Two days ago, I cleaned the computer keyboard without turning it off. Then I cleaned the keyboard
I can't print it when I use it again i The letters are gone It's no use rebooting
Look on the Internet and say Use Fn + F11 Sure But each computer may be configured differently

Failed to use Last Wanted to think F11 no way Finally try F12 Well
Last Fn + F11 Successfully unlocked Ha ha ha

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