my laptop boots or not i don't know but it's screen remains black. i tried removing battery and holding power button and then booting but it didn't help. only the lights remains on.. at first click of power button fan starts and at second click capslock lights gets on but nothing on screen. i tried changing ram but at first boot computer started normal with new ram then i shutdown and now the computer doesn't starts with new ram even... both ram works fine on other computer. i can't understand the issue please help with possible solutions.....