First, sorry for bad English.
I had a problem with Windows photo viewer: In normal mode, the picture displayed with the right colour, but when i switched to fullscreen mode, the colour changed.


Please help!
Do you have samsung monitors? I have read that they can cause issues with colour of full screen images due to their colour profiles.
I'm using Laptop Asus x550cc.
its mean ur pixel is so small to fit the imaze on screen
I would assume it's a color management issue/color profile mismatch issue. Unfortunately, I don't remember at all how it works on Windows machines.
My screen resolution is 1366x768, and that is the reason why the picture in fullscreen mode looks so bad?