What are all these black pixels?

[MysteryLemon]

I've recently started getting some odd black pixels on images in Photoshop...



They appear on all images and seem totally random. This image is covered in them but as you can see, they are not on the actual file, only in photoshop. They don't appear in Lightroom either.

When you save the image out of photoshop, they aren't on the saved file either so I'm assuming its a setting I've accidentally turned on and it's just Photoshop showing me something but tbh, it's doing my head in.

Anyone any ideas what these black pixels are and how I can turn them off?

[MysteryLemon]

Solved it.. Graphics card related issue. I've turned off OpenGL drawing in the preferences menu and it's gone away. Come to think of it, this probably did start when I upgraded my graphics card.