Model: HP Envy dv6 Notebook PC
OS:Windows 8.1 Single Language (64-bit)

I bought the notebook 4 months ago and it has been working perfectly,until yesterday, when I updated windows, now it changes the desktop display out of nowhere every once in a while!!The icons become far apart, I can't click on the windows icon to go to the taskbar, I also cannot access the search bar!!
Anyone else got this issue or knows how to solve it?

Its annoying,and returns to normal once I sign out/restart!!