Does anyone know why the following happened? I bought a replacement LCD for my 17" Sony Vaio VGN-A190 . After installing the screen, I was able to see the bios set up screen etc. After I powered down and since that time the screen has been dead. I was wondering if the dip switches are something causing no display output. The motherboard seems to be functioning fine. All lights come on fan runs etc... Any help on this would be appreciated.