Question about Dell Latitude D600 Notebook

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Dell D600 LCD issue

My wife's laptop's (Dell D600) screen won't work once windows boots up. I can go into the BIOS menu & see any & everything on the screen. Also, if I connect my desktop's monitor to the back of the laptop we can use it normally, but once windows boots up to the log-in screen for users the screen goes blank.

Can anyone help me with this one?


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  • dscwmitchell Mar 14, 2008

    Well, the F8 key is the one that selects the video display mode, but it didn't work. I also tried the F8 hold down, but that didn't give me any display options, just whether or not I wanted to go into safemode or last successful, etc., etc....

    I appreciate the suggestions, but I'm still looking for a solution.

    I will mention that I'm using this computer through the desktop monitor, so everything else seems to work well.

    Thanks in advance,

  • dscwmitchell Mar 14, 2008

    Well, you have been VERY helpful with all of this. Thank you.

    I have gotten the display to come on, but now the problem is the resolution is so low. It is usable, but very "unfriendly" to look at. If I try to change the display settings through the control panel-display dialog box, it turns the screen black. I can't select a higher resolution without it going away.

    Got any ideas?

    Thanks again,

  • dscwmitchell Mar 19, 2008

    OK, so I am using the laptop right now, in safe mode with networking. I am able to use it normally, except that I have to start it in safe mode. If I try to change ANY of the setting in the display settings & then apply them it reverts to the blank screen. The only choice I have in the advanced-monitor tab is the 60 Hz choice. Also, there is no tick in the "hide modes this monitor cannot display", & it's "greyed out", so that I can't make a change there either.

    I'm a patient guy, so let me know if you can think of anything else.

    Thanks again,


  • dscwmitchell Mar 30, 2008

    Well, I'm not sure what setting I changed to get this thing to work, but it IS working!! I thank you for you're suggestions.


  • printer guy Apr 17, 2008

    My customer was attempting to use her latitude d600 to drive a external projector for a seminar. Somehow she managed to lose video on both the internal lcd and the external display. Upon booting you have video until Windows XP loads (and presumably the point where the video driver loads) then the screen goes blank while the system continues to boot up. The Fn + F8 keys DO switch activity between the two monitors but there is no display. Also, in safe mode it will boot just past MUP to AGP440.SYS and there it hangs. Tried switching modes in BIOS but it's PW locked.

  • geokarjo May 22, 2008

    I have read all the information here and tried the suggested solutions I have also replaced the inverter board and the problem still continues. I contacted Dell Supportand they recommended I wipe the hard drive. I have not wiped the hard drive since that is Dells recommended solution to every problem.

  • Anonymous Feb 27, 2009

    The problem we have is identical to his. Unfortunately, he doesn't know what he did to get it fixed. Anyone out there able to help?

    Thanks in advance for your help,




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What I've found on two laptops I've worked on in the past two years is that in a case like this, there is a little pin near the power button (or on the strip up near the display) that tells the laptop when the monitor is closed.  If that pin gets stuck, the computer will think it's shut all of the time.  The sensor is only active in normal mode of windows with the drivers installed (if it's in safe mode or VGA mode  the sensor does not work until you raise the resolution.  the sensor doesn't work at all if you boot from a knoppix cd.)

You may be able to just flick the pin and get it unstuck, but in some cases you have to remove it all togther.

To remove it, turn the lapotp off. lean the monitor back as far as it can go (don't force it). You then need to carefuly pry up the strip that the power button is on (ussually there is a space you can pry open on the left or right side of the strip depending on the model laptop; be very careful not to break anything).  You can then pop it out with a small knife or tweesers and clip the strip back down.

If you don't feel comfortable doing this, then find someone who is.

I hope this helps someone.

Posted on May 14, 2008

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get dell driver R98704 install restart and that should work. i did that with my d600 using windows 7. remember to change compatibility to windows xp sp3 b4 you un it

Posted on Jun 12, 2012

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Posted on Jul 23, 2010

Dell latitude p3 500mhz same prob, when black screen push screen forward and backward full motion, quite roughly, seems screen shutoff switch was stuck, this one has given me a big headache as I sold it to a mate 18mnths ago phew, thanks all, worked for me....

Posted on Nov 05, 2008

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One of the F keys on your wifes keyboard will switch between internal, external and cloned display (refer to the manual for the correct key/key combination.
failing that, turn the laptop on and immediately hold down F8, after a few moments loading you will be given a list of options, use the arrow keys to highlight VGA mode and press return. The laptop will start with the most basic of display settings and after a moment attempt to ascertain the correct display settings. Obviously because Windows is a poor quality product there are no guaranties that it will find the correct settings so message back if you still have problems.

Posted on Mar 13, 2008

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  • Nicholas Wilson
    Nicholas Wilson Mar 14, 2008

    The list of options including safe mode is the list I'm talking about! Your laptop was supplied with Windows XP, on the start-up list with safe mode at the top you should have Enable VGA mode as the fifth option down unless you have 'upgraded' to Microsoft's awful Windows Vista (and we thought XP was bad!), if that is the case you will see "Enable low-resolution video (640x480)" again fifth option down and that is, from a technical perspective, exactly the same thing.

    If you are in Windows you need to hold down the Fn key and press F8 (according to the manual for this laptop), however holding down Fn and double tapping F8 should automatically reset to internal display. You need to have Windows running and have the keyboard driver installed (as it should be out of the box), you also need to press Fn and tap F8 on the inbuilt keyboard not an external keyboard.

    If you still have problems after this message back confirming the operating system you are using and if it is as supplied or is an upgrade.

  • Nicholas Wilson
    Nicholas Wilson Mar 14, 2008

    sounds like the refresh rate is set to high, it's not a setting most people access so you may not have seen it before.

    Go to display properties "Settings" tab and click the "Advanced" and select the " Monitor" tab, make sure there is a tick in "Hide modes this monitor cannot display" if you still have multiple options in the "Screen refresh rate:" pull-down list select 60Hz to be on the safe side.

    Go back to display properties "Settings" and set the "Screen resolution" to 1024x768 and "Colour quality" to "highest (32 bit)", this is the native resolution for the XGA version of the D600. If the display is still slightly blurry change the resolution to 1400x1050 as this is the native resolution for the SXGA version.

    it's best to do this with the external display disconnected so as not to confuse Windows (the OS world's D student), if you are still having problems message back.

    Nick. :)

  • Nicholas Wilson
    Nicholas Wilson Mar 19, 2008

    OK, safe mode is a diagnostic mode that runs with most device drivers (small programs that control components of your computer)  disabled, you will not be able to change display settings in safe mode as the driver that controls your graphics chip is not running. 

    Refer to the information on starting with "Enable VGA mode" in XP or "Enable low-resolution video (640x480)" in Vista, as I said they are the fifth item down on the list of options that has safe mode at the top and work from there.

    If you have the external monitor disconnected Windows should (in theory) determine the correct settings for you, however Windows (any version) is a poor quality product so if it hasn't done so after about 5 minutes follow the information I provided earlier. 


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SOURCE: Dell D600

Sounds like a driver might have gone AWOL. Can you go into safe mode? Usually by pressing F8 after the Dell logo you will be prompted to go into safe mode.

Go insto safe mode and once inside restart the computer. This will repair anything that may have shutdown improperly.

If you can, also change the resolution to the least available, normally 800x600. Once you get back into the "normal" session, you can set it to your liking.

See if this works for you.

Posted on May 22, 2009

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