I went from Windows 7 to Windows 10 yesterday. The upgrade went smoothly. But is it my imagination, or is everything now sitting on a brilliant white background? I'm getting eye-strain.

Also, the new web browser (Edge, is it called?) has a vertical scroll bar that is impossibly narrow. Is there a way of widening it? And why are the arrows at the top and bottom of the vertical scroll bar so tiny now? Can I return them to normal size?

Ditto the icons on my Task Bar. Windows 10 has shrunk them to about 50% of their previous size. How can I undo that?

Yours, a new eye-strain sufferer!