try opening your laptop find and detache screen cable from the bord close and connect external display it should show up———or from the start locate the bios sturtup botton on your left next to your charging port get a needle or anything tha can fit on that tiny hole press// your laptop will swich on but still blank its running on but dim wich means you can still see something with your phone flash light and try sertup a new os or revisit yor bios