Laptop Display won't work

[blinky8225]

My Dell Inspirion 9300 is hooked up to an external monitor through the DVI port as the primary display and the laptop display as the secondary display. While surfing the internet, the laptop display goes dead. After reinstalling video card drivers and redetecting monitors, the display still doesn't work. However, the backlight is still working, and I can still adjust the brightness through the fn keys. In device manager and nvidia's control panel, the display is not detected whatsoever. Any ideas on what's wrong here?

 

[LiLithTecH]

I'm a little confused.

The only time it goes dead is when your are on the internet?

From your description of the problem , it sounds as though you
can access any other time....

 

[corkyg]

Disconnect the DVI cable, and make the laptop display primary in BIOS. IOW, get it back the way it was initially issued.

 

[blinky8225]

O sorry for the confusion. While I was surfing the internet, the display went dead for good, and now, it won't come back. How would I see the BIOS screen? It doesn't come up on the monitor connected to the DVI port or the laptop screen. It tried resetting the BIOS by opening the laptop and disconnecting the battery, but the screen still does not work.

 

[blinky8225]

Anyone, please?

 

[Paul Anderegg]

I had the exact opposite happen to my laptop. The backlight went out but the LCD was still functioning. Upon dissasembling it, I found three seperate cables between the screen and the main laptop unit. The leads for the backlight were a simple red and black wires came off the solder. The two other cables were multi multi pin. Possibly a push onto board connector is loose? My backlight cable came off after I opened my lid after an overnight disk defrag on a laptop that wasnt used for about a year. For a month I was thinking it was software and trying drivers and all sorts of stuff, I had also cleaned up alot off the disk, was so sure it was software related!

My point is never underestimate the possibility of a coincidence.

Paul

 

[blinky8225]

Well, I did open it up. There are two wires running to the LCD. I found one to the graphics card which looked fine as far as I could tell. I could not find where the other one went. It was somewhere under the motherboard.

 

[LiLithTecH]

Remove the following🙁in this order)

- AC adapter (if connected)
- Battery
- Memory stick(s)

Let the laptop sit for 4-8hrs.

Re-install the Memory stick(s).
Install the Battery.

Power it up.

90% of the time it will clear the problem up.
If not, the LCD inverter may have gone bad.

Call Dell if under warranty.

 

[blinky8225]

That didn't work. 🙁 Thanks, though. I'm 6 months out of warranty. I don't really know what to do.