soe letters won't work on y keyoard

You can tell which ones. Thanks for any help. Now the "m" works.It's different letters and then they start working again. Thanks for any help.

 

Try cleaning the keyboard

 

Try cleaning the Keyboard as rcerrato suggests. Here is a link to help => http://www.helpwithpcs.com/maintenance/cleaning-keyboard.htm

 

Pristine Keyboard

Thanks to both of you. It was very dirty.

From now on, I am going to clean it every 5 years whether it needs it or not.