Why are 8 & 16 bit images covered in colored pixelation?

Hi...just downloaded trial vesion of photoshop CC. When I open an image it has colored pixelation on highlight colors of image if it is 8 or 16 bit.When I convert to 32 bit..the image rturns to normal. I have windows 7 64 bit operating system.Any ideas on what I can do to correct this? I am considering purchasing CS 6 extended and of course would like to test everything I can. Any help much appreciated!

This forum is actually about the Cloud, not about using individual programs
Once your program downloads and installs with no errors, you need the program forum
If you start at the Forums Index http://forums.adobe.com/index.jspa
You will be able to select a forum for the specific Adobe product(s) you use
Click the "down arrow" symbol on the right (where it says ALL FORUMS) to open the drop down list and scroll
http://forums.adobe.com/community/photoshop
In one place you say Photoshop CC and then later you say Photoshop CS6... when you ask in the Photoshop forum, you will need to clarify what you actually mean

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