I have an Inspirn 570 hooked up to a Dell monitor, which stopped displaying the screen, it is just blank. To be more specific when I start up the comuter it shows the startup screen, but when my Windows 7 Home would start loading the screen goes black.
Disconnect any external peripherals connected to the system(specially USB devices) Continously tap F8 on start up and try to boot the system into the Safe mode. Does the computer work fine in the Safe mode? Connect an external monitor, if possible for all LCD-related problems.