I have been forced to change from Windows XP to Windows 7. Could this be the reason why in my Photoshop the pointers have been corrupted into small indecipherable groups of marks? Or could it be from some Control Panel change to pointer options?
Could be a bug in your video card driver -- update the driver from the GPU maker's website.
Or it could be that you have Windows cursor scaling enabled (and it has bugs) - make sure it is disabled.
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