Question about Dell Latitude C640 Notebook

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Display The colors on my display are inverted. Like on a negative picture, how do I fix this?

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Check my threads, I have explained how to adjust color, brightness, contrast etc thru display properties
My way is the easiest, you should be able to find this issue in my posts
if you can't, let me know-

Posted on Feb 28, 2008

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I have a c640 also but the the laptop is cool and the is inverted even at the bios/cmos i think ill open it up and see if the cord needs to be re-seated...

Posted on Feb 28, 2008

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If you computer gets to hot it mess up things. don't use a computer on the bed it will keep the heat in the computer there are air ways under some laptops for the fan and if the fan can't blow heat out you laptop will soon have problems. One other thing, Laptops are not made to run like Desktops.

Posted on Aug 28, 2007

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Hi meganb, sounds like a display driver issue to me, try and download the latest most up to date video driver from this link http://support.euro.dell.com/support/downloads/driverslist.aspx?c=uk&l=en&s=gen&ServiceTag=&SystemID=LAT_PNT_P4N_C640&os=WW1&osl=en&catid=&impid= and that should solve the problem good luck

Posted on Aug 19, 2007

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1 Answer

Pictures all switched to negative lastnight


If the whole screen is looking like a negative mode: go into setting/general/accessibility and turn off Invert Colors

May 05, 2013 | Apple iPhone 4S

Tip

Black and white or negative screen resolution in Mac OS X


A black and white display, or negative screen resolution, is an issue which can occur within the various Mac OS X system versions ranging from Mac OS X 10.3 to Mac OS X 10.6.

It can appear as an anomaly which can leave a Mac User dumbfounded, not sure what is going on.

At one time your screen is normal like this, but then somehow,

f5e9feb.jpg

the screen changes into this strange negative, inverted screen.

749233a.jpg


So how does this occur?

The answer is more simple than you think.

An inverted screen like the one you see in the screen shot above, is not actually an anomaly, or the result of some sudden strange happenstance. What's more, chances are, this occurred because of what you did.

Its an easy fix however, because the only way your Mac OS X desktop screen can turn into a negative or black and white resolution, from its normal color resolution, is if a setting within your Mac OS X system has been modified.

To return your screen back to the normal color resolution, follow these steps:

* Click on the Apple menu icon, located on the upper left corner of your Mac OS X desktop screen.

* From the drop down menu, select System Preferences.

* Within System Preferences, select the pane (in System Preferences, Apple references all icons as "panes") entitled "Universal Access".

9e2fb26.png
------------------------------------------------------------------------------------------------------------
Quick Note About Universal Access:
The reason this System Preferences pane is known as"Universal Access", is due to the purposes Apple designed it for. If you notice the image for this pane above, this symbol for this feature, is similar to a placard or sign you would see on a car license plate, parking space, door or building, for an individual who has a disability or is handicapped.

Universal Access was designed to enhance features like Voice-over speech (your Mac talks to you), screen size, display settings, keyboard and mouse settings for those Mac users who are vision impaired, hearing impaired and /or physically disabled.
------------------------------------------------------------------------------------------------------------

* For the next steps in the process:

Click on the Universal Access pane.
If you look in the screen shot, under Display, you will see that the current setting is "White on Black".

3c0ac8f.jpg


Click on the radio button entitled "Black on White"
and this is the window you will see:

80ee972.jpg

Back to normal!

042f88a.jpg

That is all it takes, to return your desktop screen resolution back to normal.

This is why you were suggested as the probable cause" for your desktop screen to go into Inverted mode. Chances are you may have been in System Preferences, clicked on the Universal Access pane, and in exploring settings, may have clicked the Display setting and the
White on Black radio button, causing the screen to go into
the inverted mode or change in gray scale.

Another theory could be that you may have accidentally pressed the Ctrl-Alt-Apple Command keys on your keyboard, combined with either < > keys, depending on if you were in process of' increasing or decreasing contrast on your Mac's screen or display.

The true purpose of the inverted screen mode or change in gray scale, is to aid Mac Users who may be sensitive to the bright normal colors, that you and I see on the standard Mac OS X display screen, due to poor or failing vision.

So now that your screen is back to normal, if you should see an inverted display, or screen that resembles a negative resolution, like that of a photo negative, you know how to correct this issue.

For more information on Universal Access, click here.

Regards,

- Mactechtrainer

on Feb 08, 2010 | Computers & Internet

1 Answer

The colors on my laptop's screen are inverted, how can I fix this?


Both OS X and Windows have inversion options for their displays. Their meanings, on the other hand, differ with the operating system. An inverted display on Windows refers to the display actually being upside down, while an inverted display on the Mac refers to the colors being inverted. Either way, these options can hinder the use of your computer, for obvious reasons. Luckily, an inverted screen can be fixed quickly, on both Windows and OS X.

Right click on the Desktop and select "Properties." Click the "Settings" tab and then select "Advanced." Click the "Driver" tab and then "Graphics Properties." Press "Display Settings" and uncheck the "Enable rotation" option. Click "Apply" and then "OK." On Mac OS X Click the Apple logo in the upper left hand corner of the screen. Scroll down and select "System Preferences." Select "Universal Access" and click on the "Seeing" tab. Check the "Black on white" option and the display should return to normal. Close System Preferences to save the changes.

Feb 28, 2013 | Dell Latitude D820 Notebook

1 Answer

What is causing my TV to display inverted colors, like a negative photograph? The picture of my LN46A530 LCD TV has degraded an it looks like if I was seeing a negative photo.


TV display inverted colors, like a negative photograph because defective panel. Mostly from T-con board. Replace T-con board.
I hope that will solve your problem.
Thanks.

Mar 03, 2011 | Samsung LN46A530 46 in. LCD HDTV

2 Answers

My MacBook Pro display screen is looking very strange....like a color photo negative of what it should be. White backgrounds are black, black letters are white and so on. I heard there was a problem with...


Don't worry you have put on one of the universal access settings if you go to system preferences and then universal access under display change the setting from white on black to black on white. Hope this helps

Dec 03, 2010 | Apple MacBook Pro with 17" Display

2 Answers

Display


your laptop display mass color, it is not the issue of inverter.
there are two situations:
1) mass color you can not see any messages like letter or picture
2) mass color with some or any messages you can see.
above situations you need to check LCD sreen cable connection between LCD socket and the motherboard socket, plug back properly.if not fixed, there are some tips you may consider:
1) change the Ram if the display ram is not isolated.
2) the LCD cable damage need to change or
3) LCD screen damage need to change or
4) finally the motherboard display chips damage(rare)

May 07, 2009 | HP Compaq Presario V2000 Notebook

1 Answer

HP Pavilion DV7 Display problem


How long have the colors on your display been "reversed/inverted" and looking like a negative....... Did you drop or damage the laptop in any way (sudden shock/bump)? Also, has it been allowed to overheat (if you run the laptop while it is sitting on a soft surface such as a bed, pillow, couch, etc it can allow the motherboard to overheat because it cannot get the airflow through the cooling system through the fan/vents because they are blocked). Have you checked to see if your laptop is included in the "HP Service Enhancement" program???

Mar 01, 2009 | HP 417035-001 - HP Pavilion dv2000 Series...

1 Answer

The pictures on my compac presario laptop model V5305WM look like negatives, or xrays. This problem appeared overnight.


Are you talking about the thumbnail view or when you open the pictures in a specific program? Please check the program settings viz. view, edit, tools etc. and see for any option to invert colors or so.. 
If this doesn't help then you may also check the display settings for your monitor.. however that shouldn't just affect the pictures on the computer , anyway.. 
Please rate this post!

Sep 26, 2008 | Compaq Computers & Internet

1 Answer

Negative/inverted pictures


If the images in the camera are inverted , then could mean repair or replacement is the remedy and I suspect only replacement will be the answer.
When you say Photo Gallery- do you mean as displayed in your computer after uploading?
If so then an image editor such Irfanview or Picasa will revert them.

Jun 23, 2008 | Fuji FinePix A350 Digital Camera

1 Answer

Display


try to remove ur display driver and reinstall it

Dec 03, 2007 | HP Compaq Presario V2000 Notebook

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