Ok, recently, I broke the hinge of the laptop's lcd. I replace the hinge, there was a cable that was broken, I realize that cable was not related to the lcd since it was connect to the wireless network chip.
I made sure all the lcd cable are plug in the laptop motherboard.
On the back of the lcd, there was white tape and it said do not touch, I accidentally touch this by mistake. I don't know if this is really serious.
Now, the laptop does not have any picture, but the light is on, the lcd has a grayish color, its like its about to load, but no image comes up.
This issue occurred during the hinge breaking.
I hope I didn't break the lcd.
Model is dv2037us.
The laptop is fine if I hook it up to a monitor via vga port.
Try to open the lcd and check , or loose connectors .Am I had the same problem and was only to those connectors. Do not forget to check if the light source is intact. In the worst house you can splice a cold from a socket (or on the motherboard or from the monitor) Sorry for my ENGLISH