"Why is my screen black?"에 답변I have a Dell 1764 that took forever to figure out. The computer ran but it was hard to get the monitor to come on. Pushing the on/off button numerous times and the screen would work but this was time consuming . And could take up to 15 minutes. Finally found the solution.......the cable that runs from the mother board to the monitorwas damaged from opening and closing the laptop. 4 years later still going strong.