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If you cannot detect an image then try connecting an external monitor to the laptop to check if its’ display stays on OK when you flex the laptop’s screen.Įven a TV can be used as an external monitor as long as you have a HDMI cable with suitable connectors at each end. Flexing the screen before may have caused movement in the systemboard / lower case masking the location of the actual problem. This may be in the systemboard, (backlight power supply circuit), the eDP cable (damaged where it passes through the hinges to get from the systemboard to the screen or loose connection at either end) or the LCD unit (faulty backlight circuit) If you can see an image you have a backlight problem. Try shining a torch at an angle close to the screen to check if you can see an image at all when the laptop is turned on.