Hello, I have a Lenovo T440s. I was just using it last night and everything was okay, but today when I turn it on I get a white screen with gray bars on the sides. I have tried removing the battery and rebooting it several times. Does anyone have any tips or suggestions to get rid of this white and gray screen to a proper display again? This is a work computer, so I want to do everything I can to make sure it's okay for when I go back to work after vacation. Thank you!