(what appears to be) color pixels on computer screen

Hello,
Try connecting an external monitor to the computer and check if the external monitor displays the same thing. If the external monitor is fine then you would need to fix the LCD of your laptop. or have it replaced.
If the external monitor displays the same thing, then you would need to update the video driver in your computer. You can use RadarSync to automatically update the drivers.
David

You can use this pixel test, this test for dead pixels, but it will also help with stuck pixels,move through the colors, look at each color to see if the line remains on each color, then switch between colors as fast as you can, do this at least 5 times cycling through the colors. If this does not help I think you will have to go to the MFG website and check your warranty. If you don't have one or it's expired and you end up buying a new one, make sure you check newegg.com, one of the best places around for computer parts.

http://deadpixeltest.net/

Purple Panasonic PC>TV Problem:
The VGA cable uses three primary color RGB channels.
Red, Green, and Blue.
The picture is made up of pixels or dots arranged in a grid along the "X" horizontal axis and "Y" vertical axis.
The computer mixes the intensity of each color channel to create a unique color per pixel.
All RGB at 100% creates white.
R+G creates yellow.
R+B creates magenta, ie purplish.
G+B creates cyan.
So a purplish tint sounds as if your Green wire has no signal, which may indicate a faulty VGA cable or VGA socket.
Put another way, (R+G+B)-G=R+B=magenta.
So try another VGA cable, spray all socket pins with "Servisol " or similar contact cleaner.
0%<--------->100%
Cyan<------->Red
Magenta<--->Green
Yellow<------>Blue
All 0%=Black; All 50%=Grey; All 100%=White.

There is three LCD in the projector red, green and blue. If green LCD make any fault mean line or dot or dots then screen show these line or dot in purple color:
If line is very straight and sharp edges then green LCD is faulty and need to be replaced.
If line is not straight and faded edges then some thing in LCD block so your projector need service

Could be whats known as dead pixels, this is tested be showing up a black or white screen. Microsoft paint or word will do. If an area always has dots then dead pixel. However if it doesn't constantly remain a dot then, some-thing else. Dead pixels come about due to age.
A technician will be able to diagnose your problem by performing white screen test.

damnor01

I assume this is related to your LCD monitor.
I think you mean dead pixels. The LCD monitor has tiny pixel elements, one for each red, blue, green color and each one of these colored pixels are turnes on by a transistor. When a transistor fails then the colored pixel it controls does not light up. This is a dead pixel and it shows up as a tiny black dot.
If the screen displays a blue screen, a dead blue pixel will appear as a tiny black dot in the blue screen.
You normally would not notice a few dead pixels unless they are grouped together.

My suggestion would be to test your computer using a different monitor. You have to find out whether it is your monitor that is bad or your computer. If you use a different monitor and everything looks fine and you see no dots then you know the computer is fine and it's the monitor that is bad. But if the screen still show dots and lines even with different monitor then your computers video card has gone bad and needs replaced. I would not try to repair the monitor that can be dangerous.
Good Luck
Proteus

Hi Casey,

If the problem is getting worse, than either the pixels are dying (so to speak) or you might have a problem with the monitor's screen.

Unfortunately, if either of the above are true, then the only way to fix it would be to replace the screen, which can be quite expensive. If you agree that this is the problem then you'd be better off getting a new monitor instead of spending money to get it repaired.

Good Luck.

usually this indicates that the lcd crystals are going bad

That dot represent lit (stuck) red sub-pixel and if it only one that is not considerable as failure due to dead pixel warranty but you can try to solve this problem with software called screen fix. It possible that during exploitation that red dot dissapear.
Good luck