Exactly. Once the matrix has fallen by itself. They exchanged for me a guarantee ... The waiting time for implementation is too long. I do not want to copy all the data again and send it back to the site for a month ... This is my second Lenovo laptop Y series = tragedy. For 1500 $ I needed something better and not **bleep**. Currently, I put plastic under the cable connector of the keyboard and on the keyboard connector several layers of plastic on even with the end of the battery. Temporarily 95% of the time works. Sometimes it helped to push the right side of the bottom of the laptop with my hand and he caught ... In addition, I have turned all the screws and works on it ... But this is not the solution.