Why wont my computer display pictures?

[flowerpotttttssss]

About 2 days ago my computer stopped displaying pictures. It pops up a little page with a blue green and red dots. It never used to do that. I havent installed any security or anything, i have only installed a videochat plugin from google. I want to see all the pictures on facebook, so ireally need to know how to fix it! Thanks! (oh, and put it in an easy-to-understand way )

[Starrysky]

Here is something that is easy to understand--you have given no clue as to what your computer is or what runs it (the operating system). No guesses are possible from such secrecy.