first thank you for all the answers
I think maybe a bit more information is required, what I am trying o do is to use my laptop as a pattern generator for CalMAN's integrated test patterns for a 3DLUT for an eecolor box, this require around 4000 different patterns, so not practical to do it of a disk as I normally have done. the next best thing is then a pattern generator (which is out of my range), and the next next best thing is a laptop (configured correctly
CalMAN's patterns are displayed in a windows window, therefor no video player and no vide render, just a popup with pre-configured RGB values in the range 16-235, if required or desired you can select the range to be 16-255, to calibrate the whiter then white.
since as you say windows will always output 0-255 the issue must be in my video card driver, I assume this is controlled by CCC?
If I could get you to have a quick look in the following post http://www.avsforum.com/t/1462960/eecolor-processor-calman-3d-luts/150#post_23140116
to see what settings I have used in CCC.
I have additional tried all combinations of Pixel Color Format and dynamic range.
I am on the market for a new laptop, or if anyone know of an external video card I can use I would love some sugestions