Hello,
Suddenly I have a very weird problem in photoshop CS6.

as you can see on the image when I use any kind of light blue its shown as black or light blue with black in the middle.
Its only for light blue and all other colours work fine. Also when I export the image the light blue is shown fine. The problem is only in photoshop CS6.
Also everything works fine in other adobe programs.
1. I have uninstalled installed photoshop again. Same problem
2. Did same for whole adobe suite, again same problem.
3. Updated photoshop, same problem
4. removed and added again graphic card drives but also same problem.
I have a brand new PC with win7 65bit, 32gb of RAM, Sapphire AMD 7970, intel 3930k.
Also I use sRGB, this problem doesnt exist when i use CMYK.
Im am totally lost
Suddenly I have a very weird problem in photoshop CS6.

as you can see on the image when I use any kind of light blue its shown as black or light blue with black in the middle.
Its only for light blue and all other colours work fine. Also when I export the image the light blue is shown fine. The problem is only in photoshop CS6.
Also everything works fine in other adobe programs.
1. I have uninstalled installed photoshop again. Same problem
2. Did same for whole adobe suite, again same problem.
3. Updated photoshop, same problem
4. removed and added again graphic card drives but also same problem.
I have a brand new PC with win7 65bit, 32gb of RAM, Sapphire AMD 7970, intel 3930k.
Also I use sRGB, this problem doesnt exist when i use CMYK.
Im am totally lost