My new (just three days old) Dell Inspiron N4050's screen isn't working. When I press the power button, the fans start running, and I hear sounds related to logging in, but the screen remains blank. After about 45 minutes, the screen will turn on, and act normally. If I reboot the computer, it continues working, but if I turn the computer off and let it cool off, the same thing will happen. I've noticed that when the laptop heats up, it shows everything, but upon cooling, the screen remains blank.
How do I fix this?