The image link describing the bug / ill-feature is here:
My PC and Windows are working fine, however for the past few days I'm getting an annoying window drag over any window.
My OS is: Windows 8.1 Pro
Whenever I drag any open window, only the borderline with a black color is seen as dragged and not the whole window.
I tried refreshing the PC but it encounters some problem, and I don't have a system restore point right now in my system.
Please suggest how to remove this annoying window drag feature.