Notes Before Installation: 1: Before you install the screen, please remove the battery to let the machine go into hibernation. This will make sure the data be written to the new screen. 2: While installing, please press the screen carefully. The screen is fragile, don't tear off the protective film during installation. 3: Clean the flex cable with alcohol before installation, and confrm it connect well before testing screen work. 4: Don't pull the flex cable ,be careful during installation, otherwise it will cause the black screen, blurred or undisplay. 5: If you are trying to install the screen for the first time, we recommend that you ask a professional technician to help you install the screen.