Hello and thank you for your question, I would be happy to help you today. Normally a tablet automatically resizes the screen as soon as you turn it to landscape position. Do you loose part of the screen when you so that?
another go !. Your reply also would not allow me to read all of the right hand edge and there was no means of scrolling. You help is appreciated. Ron
On your Windows 8 desktop, right-click over the desktop and select Screen resolution.
Next Select Make text and other items larger or smaller from the bottom of the display settings.
Here you can change the scaling for your display. The default typically is Medium however your PC may have come with a different setting. Let me know if that works.
Please let me know if we were successful or if I can be of further assistance. Have a nice day!