Chosen Solution
When I start my notebook the display is completely black, I have already changed the inverter but the problem isn’t resolved.
The problem can be the display, the graphics adapter or the mother board. If you connect an external monitor and it shows your desk top then you have a bad display. If you don’t have an external monitor, use a flashlight angled to see if you can see icons on the desktop, this narrows the problem to a back light on the display. If none of these steps work, then you may have a bad mother board or bad graphics adapter. Shut down and remove all the memory and see if you get a beep error, a beep error will indicate that the mother board is working.