All of a sudden there is no color just black and white on my 27pt6441

check your HDMI/VGA cable this is sometimes cause the color lost. change it or try another cable...

keep mode RGB
go edit - mode -RGB

Are any of the other inputs such as DVD or VCR or PC inputs out puting color? If they are also only in Black and white they something has gone wrong inside on one of your main boards.

I'm wondering what input you are using.
HDMI
Component
S-Video
Composite

Hello Michel,
In the iphone 3GS there is hidden feature called the "White on Black". It completely inverts the color scheme of your iPhone. The background on the home screen will be white, and the text will be black.All of your native apps will have an inverted color scheme. to disable this feature, Go to Settings then General then Accessibility then Turn of White on Black.

The laser may be dirty on this try to purchase a CD/DVD player cleaner.

Wow that's interesting, was there anybody watching your home while you were gone? There is a possibility that someone simply turned down the color level with the color control? Check that first. It's an unusual symptom. With composite video, component video or HDMI it's not usually possible to experience that defect. Since the color (chrominance signal) is usually inseparable from the luminance (black and white signal) I would check the color setting first. Other wise your set has become unable to detect that color signal... I bet it's a setting rather than a defect.

Happy Viewing
Zashiban

Chroma IC problem

The contrast of the monitor is very low. reset the monitor settings using the menu button in the monitor.

put the driver onto each computer

The problem is simple.Someone or somehow the "TYPE OF ORIGINAL" option on ur SCANGEAR CS window.Set it back to "MAGAZINE" or "PHOTO" and it should scan in color.