Hi bobDoyle and Gaetan93

This problem happened to me too. Can I ask, How it happened to your device ?
Do you have a lot of pressure on or hitting your device ?
And Which of the black key on your device is corrupted ?
And Have you ever succeeded in fixing it?
I take good care of my device , But I do not know how this happened to it .

Very thanks if answer to me .

  • This reply was modified 5 years, 11 months ago by Pejy.