Alpha always 0

Not sure where to ask this since I image this isn't a bug but rather a problem of mine.

I was working on a project when all of the sudden anytime I add a sprite I am unable to add any color to it. The alpha channel remains at 0. If I change it, it goes back to 0.

This is a problem not just for the current project but any old or new projects I start.

I reinstalled Construct 2 but no success.

Any suggestions.

Thanks

Is this a problem in the image editor, in the layout view, at runtime...? Can you provide screenshots? Also, are your graphics drivers up to date?