Does your notebook display remain quite dark, but you can still barely see the picture in the background? This can be a sign that the inverter of your laptop is defective (does not apply to LED displays). The inverter is responsible for controlling the brightness of LCD displays. The installation is uncomplicated and with some technical know-how and the help of our video laptop installation instructions easy to manage by yourself. In case of problems, our free technical support is at your disposal. Current notebooks with LED display have no display inverter installed.