I haven't even had this Laptop for a year, and the LCD screen seems to have gone out. It is a Dell Latitude D520, excellent condition -- except for the screen, and the battery (won't hold charge anymore). In any case, I had a lot of people tell me it might be the battery/charge that may be causing the bottom half of the screen flicker and flash with vertical lines, and when I move the LCD screen from either side (holding it from the upper right corner and pulling it toward me while holding the upper left corner) it stops and then continues to flicker more.
Are there any ideas as to why this could be happening? I really hope it's as easy as opening the bad boy up and cleaning something out.
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It sounds as though the video card has gone bad in your system. There are a couple of things to try to eliminate the lcd.
If the LCD on the system shows no display or has other problems, here are some basic steps to take:
If the LCD is not displaying any video, connect an external monitor to eliminate a no-POST problem. A good image on the external monitor eliminates a video card problem or a POST problem.
Connect an external monitor when possible for all LCD-related problems to help eliminate a possible software or video card problem.
If the LCD has lines on the screen, check the system during POST as well as system setup to determine if the lines are present in all modes of operation.
If you cannot get any video by connecting an external monitor then your motherboard will need to be replaced. The reason for the motherboard replacement is because your video card is soldered onto the motherboard.
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Tryconnecting an external monitor to the laptop. You may have to select the videooutput to display on the external monitor by holding down the blue key and pressing the blue CRT/LCD (located on one of the keys, likeF8,F9, etc..). If the problem occurs on the external monitor with the batteryor AC power, then you have a problem with either the video card or motherboardin the laptop. If the problem does not happen using the external monitor thenyou laptop's LCD display is going bad.
When it flickers, can you still see the text when the screen goes dark? May have to use a bright flashlight set right on the display to see the text on the screen beside where the light sits. That will tell you if it's the backlight.
You can also look at a grazing angle into one of the edges to see if the backlight is flickering when the display does. When it's cold, does it start with a slight pinkish color? That can be a sign of backlight going bad. Anything interesting happen when you flex the cable by moving the screen?
I'm not saying it's impossible, but I've never seen software cause consistent screen flicker. And if the vga port doesn't flicker, sw is even less likely the problem.
If you bet the odds, you'd bet on a bad display cable. Won't hurt to try replugging it.
If that doesn't help, then your monitor may be dying....
On a 3 month old laptop don't even bother finding out why just get it back to get fixed under warranty. The flickering can be from several things but unless it has been damaged there is no way you should have any problems even small ones with that new a laptop.
The flickering can be a bad connector or power problem which you might see on a 3-5 year old tired laptop but definitely not acceptable on a new one.
Sounds like you back light or LCD inverter is going out, If you don't hear a whine then it is just the LCD screen, if you hear that whine then it is the inverter. An inverter will run 40-60 dolloars as opposed to and LCD screen which usually start around 100 and go up...
Hope this helps, if so please rate my solution accordingly.
Since it seems as though you dont move it very much you might be able to hook an external monitor up to it and using the Fn+F5 button swap it to use the external monitor untill you can get it repaired.
Check first by connecting it to an external monitor. If you see that it is the same problem in the external monitor then I think there is something wrong with your video card. See if you can re seat the video card.
This issues also come from the cable that connects the LCD with the motherboard. Have you opened the Laptop anytime and moved the cable?
Check these first. It sounds something loose or a something related to video card.
Horizontal lines on bottom third of my Toshiba (Satellite Pro) Laptop with XP windows got fixed by flicking my finger on the laptop screen! Was it a loose connection? I don't know. Change of screen resolution did not help, Rebooting, did not help nor restoring to prior dates. Thank you guys.