Hey there....i recently bought a toshiba satellite l50 c. Wen i powered it on , it powers up but the screen is black with screen lights on. I tried everthing like draining the battery for 1 min and tried to power up again. It powers up but still blank screen. It does not even show the toshiba logo while starting up. Plz help ! Its giving me a lot of headache and its a new one.