have amilo pro laptop with dead screen but otherwise appears to be working,plugged into external screen and that dead too, tried various boot discs including hd repair disc which brought screens to life, entered bios, and that froze,switched on off several times still no life in screens,boot disc didnt work second time,,checked external screen on other laptop all ok. help please, it appears a mobo part fail anyone know how i can check this without a screen, many thanks