The windows NVIDIA display driver installed after a fresh installation of the 32-bit Ultimate/Enterprise editions creates problems on Dell Latitude D830 laptops with the Nvidia Quadro NVS 135M inbuilt video card! The faulty display driver version is 7. As shown below: The symptoms are distorted visual display after a period of inactivity (when the laptop is idle) and occasionally, there is an application popup as follows: Application popup: Windows – Application Error: The instruction at 0x7752fc47 referenced memory at 0x00000014. The memory could not be written. When this happens, an event is recorded in the Action Center as shown below: Solution: Download and install the latest driver from Nvidia’s site as no Windows 7 drivers could be found at Dell’s support site. In this particular case and time of article the following will guide you to the latest display driver.
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In this guide I explain how to remove and replace the LCD screen on a Dell Latitude D620 laptop. All removal steps will be very similar for many other Dell models.
If this guide works for you, please mention the model number in comments after the post. There are six screw seals on the LCD bezel. Remove all six seals and screws found under them. You can remove the screw seal with a sharp object or small flat head screwdriver. The seal bottom is sticky.
Glue all screw seals somewhere so they don’t get lost. Start separating the bezel from display cover with your fingers.
Remove the bezel. Remove six screws securing the screen mounting brackets to the display cover. Separate the LCD assembly from the display cover and place face down on the keyboard. Now you can access the video cable on the back. The video cable has two connectors. One of them is connected to the inverter board and another one to the screen.
Disconnect the small connector from the inverter. Disconnect another connector from the LCD.
Remove the screen from the laptop. You’ll have to transfer both mounting brackets to the new screen.
Each bracket is secured by a few screws. Some Dell screens have the inverter board is attached to the frame. It’s possible to remove the inverter and replace it separately. In one of the previous posts I explain how to from a Dell Latitude D620 laptop. Hello: Really appreciated your instructions on the removal of the LCD Screen on a Dell 620 laptop. I am attempting to replace the inverter board (only) on my 620 but am not familiar on just how to do it for fear of messing things up.
I followed your instructions and photos and proceeded with the sequence down to where I now see the inverter board but do not know how to remove it properly. There are wire connections on both ends and I cannot determine how to release them from their sockets.You state “Even though it looks like the inverter board is a part of the LCD screen, it is possible to remove the inverter board and replace it separately”. As stated, I am afraid to start pulling on the connectors to try to remove it so would like to know if you could furnish me with detailed instructions and /or pictures on how to go about it properly.
Sincere thanks: Richard. Richard Metzger, Really appreciated your instructions on the removal of the LCD Screen on a Dell 620 laptop. I am attempting to replace the inverter board (only) on my 620 but am not familiar on just how to do it for fear of messing things up. I followed your instructions and photos and proceeded with the sequence down to where I now see the inverter board but do not know how to remove it properly.
Take a look at this guide for a Dell Inspiron 6000 laptop. I’m explaining how to remove the inverter board at the end of the guide. I think it could be similar to your laptop.
Mip, I see other posts regarding a ccfl lamp being the cause of the “dark screen”. This post does not mention anything about a lamp, only an inverter. I dropped mine today and the machine is working and displays but with no backlight. Do you think this is an inverter or a bulb?
If the backlight stopped working after you dropped the laptop, most likely you damaged the lamp. Also, it’s possible that one of the cables got disconnected from the inverter board and connecting them back fix the problem, but it’s not very likely. Hi, I have a bit of a strange problem: My LCD (D620) almost always doesn’t work; so I have it hooked up to an external monitor. However, every so often, when the laptop shifts slightly, the LCD (again, the one removed in this tutorial) flickers on briefly- for at most 10 seconds, usually 1 second or less. I removed the LCD as per your instructions, but I can’t see any unusual crimps/bad connections. (and putting it back in did not clear it up.) Do you have any suggestions? Note: I have been unable to reliably reproduce the conditions under which the LCD flickers on.
Thanks for this page. Just did a replacement on a D620. My advice to others after taking a lot of time and being petrified of screwing up my new screen: Take your time.
Follow the pictures. Find a safe place for the three sets of screws and rubber fastener caps (still looking for one of the screws, alas). Remember that the mounting brackets on the sides fit UNDER the screen. Don’t do this under the influence Donate (I did), even a small amount if this saved you a big fix-it bill. Screen obtained from on ebay store laptopservicecenter. Great price, shipped right away, product looks good, new and so-far-so-good.
Hi, I have a strange problem I cannot seem to google an answer to. My Dell D610 has the opposite problem to most, the brightness cannot be ajusted by the keys or by bios(the keys do work, as the dell software shows brightness level going up/down). Its same brightness on battery or PSU. But it is not dull, it is stuck on FULL brightness.
It is very bright at night, and drains my battery fast. It did work before for previous owner. I have tried removing/reconnecting the cable under the keyboard that goes to the lid.
IML Tech says”Could be a faulty LCD screen or bad video cable. How it flickers?
The screen loses just the light and the image stays on, or the scree looses both the light and the image? The light flickers or the image itself flickers?” The imagery is still all visible, and the laptop is still usable because you can see everything on the screen as usual – at full brightness and contrast. However it’s as if all the imagery has developed a hazy reception, so every image looks as if it’s being electrified. It’s shimmering as if it’s not quite being transmitted at the right frequency.
A bit like a TV signal if the tuner isn’t at quite the right frequency. Greeting from France, Sorry but I don’t know how to quote posted messages.
IML Tech said to Dave (I have a same question like ChrisH, I have a Latitude D510 working base(only the base of it) and the top of a Latitude D505. I saw that the plugs are different, but is there a possibility to put the top of a D505 to the base of a D510?
Is there a adapter connector?): “There is no adapter. Apparently D505 has a different video cable.
I don’t think you’ll be able to install the top of D505 to the base of D510.” Well, I can tell only about the European market but it is possible to install a D505 screen in a D510: I made it! The only known diference is the ribbon cable that has a different connector to the video board.
You should also check the LCD display itself but in most cases, it will work because almost all displays (LCD panel + inverter) are the same for the whole line: D505, D510, D520 and D530. There are two major OEM who supply these displays: Quanta and AU Electronics. They also provide the inverter but do not produre them (SUMIDA in most cases). You will find details at Dell Community (I posted technical details there).
What does work for European market should do for US market. Art, I have a D630 that went dark a week ago.
Worked perfectly fine with an external monitor but the screen was very dark such that you can barely make out the contents and only when there is ambient light. I ordered a replacement LCD/inverter from Dell for $130 and just replaced it using your excellent instructions. However, the screen is still the same. What could be an alternative problem?
If we assume that your new LCD screen and inverter are good working parts then your problem could be related to the LCD cable or motherboard. I cannot tell which one is failing. My Dell Latitude D620 was working fine and then I connected it to a docking station for a couple of weeks. When I disconnected from the docking station the screen now shifts slowly through white, yellow tint, green tint, blue tint, etc. It doesn’t display any information at all.
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Would this be in the inverter, the LCD, or maybe a cable problem. That it quit working at the time I started using the docking station may be a coincident. Would like to know if anyone else has experienced this problem and what was done to fix it. @ Lewis Fulk, My Dell Latitude D620 was working fine and then I connected it to a docking station for a couple of weeks.
When I disconnected from the docking station the screen now shifts slowly through white, yellow tint, green tint, blue tint, etc. It doesn’t display any information at all.
Would this be in the inverter, the LCD, or maybe a cable problem. That it quit working at the time I started using the docking station may be a coincident. Does it still work fine with the docking station? Also, test the laptop with an external monitor. Can you get image on the external monitor?
Look on the docking station connector on the bottom of the laptop. Can you see damaged pins in there? Maybe something got stuck inside the connector? @ Eric, I didn’t completely reattach it (put all of the screws back in) to test – would that make a difference? No, that wouldn’t make a difference. As long as your new screen and inverter connected to the motherboard it’s not necessary to assemble the laptop completely for test. Replaced screen and inverter, but screen is still black.
If we assume that new screen and inverter are good, your problem could be related to following: 1. Bad connection between the video cable and screen/motherboard/inverter.
Failed video cable. Failed motherboard. Could be just bad video connector on the motherboard. Sorry, I cannot tell what is wrong without testing the laptop with known good parts.