Why can't I use the scroll wheel in Photoshop CC 2014?

Hi,

I have Photoshop CC 2014 on my laptop. It was working perfectly but then I had to reinstall Windows. Once I had reinstalled Windows and Photoshop I discovered that I could no longer use the scroll wheel on my mouse to move around documents in Photoshop. I can't scroll up to move the document up, scroll down to move the document down, use Alt+Scroll to zoom in/out or use Shift+Scroll to move left/right.

I've looked in the options and the option to use the scroll wheel to zoom is enabled - still not working.

Any ideas? Tried Googling but can't really find any solutions.

Thanks all!