Why don't these keys work on my keyboard?

the letter between the z and he c will not work, also the letter between the c and b. I press and no writing will come from them, they are lazy. Why this?

Your keyboard is either broken, has a short fuse, or is so dirty inside (dusty).
I would recommend buying a new one.
Sorry to hear this : [

~Lady

this problem can not solve. you can only change your keyboard. I aslo had this problem, then I changed my keyboard.

Years ago computer keyboards were rather expensive. I remember fixing a few by taking them apart and with a soldering gun exchanging switches between a failed essential key and a working but unnecessary one.

Today keyboards are so cheap that they don't justify such heroics. Just go to an electronics store and find an inexpensive one that you like.

well maybee the keyboard is broken