Photoshop CS6 screen problem in PC with photo

[widepok]

hi guys, there is a screen problem with my photoshop. When i move my object, i can't see anything...also with this black dot error screen.
And i have the same problem 1 year ago, but i dun really remember how to solve it....
Can anyone help me:neutral:?? thanks a lot!!!
Sorry for bad english

 

[widepok]

does anyone know what problem is it :'(( ?

 

[Berbatov]

What does the regular picture look like? It's hard to tell what's part of the error and what's not. Are the waves part of the original picture?

 

[widepok]

What does the regular picture look like? It's hard to tell what's part of the error and what's not. Are the waves part of the original picture?

Thanks for replying ~
Actually the picture is empty, no matter I open a new file or a old file, the black spot screen is still here
Also the black spot screen are always changed, when I zoom in or out
Am I the only one have this problem :sad:?