Macbook air keyboard Won't type one letter.

[10smom]

This started after I restarted my computer. How do I fix?

 

[10smom]

Update 10/19 I just noticed that if I hit the shift key the letter will type. The letter is the letter A by the way

 

[MC6800]

First thing I would check would be System Preferences>Language & Region>Keyboard Preferences>Input Sources to see if it still has the right keyboard selected.

 

[10smom]

Hey now it is Working intermittently. It seems that something is triggering it to happen I think I have an undetected virus.

 

[Toutou]

Hey now it is Working intermittently. It seems that something is triggering it to happen I think I have an undetected virus.

A virus that randomly blocks one key? That would be the most stupid virus I've ever heard of.

 

[MC6800]

It's much more likely to be an unintentional assignment of a key macro (shortcut) to that key. Check in System Preferences > Keyboard > Shortcuts, where you can look through the various assignments, or just click the Restore Defaults button. If you have a keyboard macro program installed, try disabling it.

It might also be a flakey keyboard: Turn on the keyboard viewer by enabling System Preferences > Keyboard > "Show keyboard viewers in menu bar", then select "Show keyboard viewer" in that new menu. Now you should see immediately when that 'a' key is pressed, shifted or not.

Another thing to try is an external keyboard if you have one.