How many? Move - don't move?
Always in the same spot even after you re-boot?
Always in the same spot no matter what programs are open?
Is a set of the green dots captured in the screen capture?
Replay:
not to meny, it's depends
they chenching they position, whit every new picture opend, refresh helps, but not for long
and they can be captured whit print screen
I suspect on problem whit video card?