Macbook apps getting stuck and turning white 10.10

Hello everyone. I have some serious problems with my mac. Two days ago i used the bootcamp to install a Windows. After a while,on Lightroom the screen got stucked and a white vignette was slowly appearing on the screen. I thought that it was because of the Windows and i reinstalled my Mac OS. Things were ok until today when i was surfing through the internet and again the same thing happened. I don't know what to do. I need my Mac ASAP. I didn't have this problem until now and i could't find a similar one on the internet.
I mention that i did erase everything on my mac with disk utility before installing Mac OS.

I will attach some pictures which are tooked inside of Launchpad and Google Chrome. I hope that they are explicit.

Have a good day.