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Windows 7: Colours patchy, (like 16-bit or 256)

29 Aug 2010   #1

Windows 7 Professional 32bit
Colours patchy, (like 16-bit or 256)

Hi everyone, this is my first post on sevenforums. Was on vistax64 and switched to Win 7 just about a week back. The switch from Vista to 7 was pretty easy unlike XP to Vista.

Now for my problem. I was using a D-sub VGA cable to connect my graphics card to my display (BIG Geforce 8600GT to Bravia KLV-26V300A). The cable was cheap and of poor quality. I guess it had interference issues. If they are of relevence i will post it later. But now i changed to a DVI-D Dual Link - HDMI cable. The problems i had with the other cable are gone. But now the colour gradients are not displayed properly. Its like how you would see it in a 16-bit or 256 colours display. A patch of one shade then a patch of the next, and not a gradual change. It is not as noticable as 256 mode, but it is noticable. Even on the login screen it can be observed.

What could be wrong? I would be grateful for any help. Thank you.

Adding some details:
Eg: The blue on either side of this page has horizontal patches in the area that the gradation occurs.
My resolution: 1360x768, colour depth: 32-bit, Refresh rate: 60Hz. NVIDIA drivers downloaded just a week back.

I'm uploading two pictures.

The first (desktop) is just a simulation, ie. i saved the picture in 256 colours just to show an exaggerated example of my problem.

The second, i created a new black image and used a gradient tool. I can see diagonal patches, but im not sure if others will see it.

Attached Thumbnails
Colours patchy, (like 16-bit or 256)-sample.jpg   Colours patchy, (like 16-bit or 256)-sample2.jpg  
My System SpecsSystem Spec
31 Aug 2010   #2

Windows 7 Professional 32bit

Is my problem that difficult or am i violating any forum rules?
My System SpecsSystem Spec

 Colours patchy, (like 16-bit or 256)

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