For starters: I have a Dell Inspiron 640m.
A month or two ago, my laptop's LCD started doing a strange thing that I've termed, "eating itself." The display will suddenly stop refreshing, a blob-like section of pixels will all turn blue and then expand outward in an interesting and visually appealing cascade of colors, until the entire screen is just a wash of colors.
I used to be able to "fix" the problem, by light pressing the bottom right hand corner of the front LCD bevel... or closing and opening the laptop lid. Eventually, it died. The LCD would refresh once or twice, and then the image would be static, until eventually it started to eat itself again. I attempted to reseat connections, but this seemed to only make the problem worse... and brings us to our current situation:
The LCD backlight is on, but I get no video to the LCD.
I've run the Dell diagnostics on the laptop and get the following error:
2000-0321 Unable to detect LCD
I've currently got the diagnostics still running, and the laptop is connected to an external monitor. Other than this LCD issue, it functions normally.
I replaced the LCD and the cable connecting the LCD to the motherboard/videocard or whatever it connects to. Any suggestions?