Why does the scroll bar in Word 2013 freeze?
"Scroll bar in Word 2013 freezes. I need to move mouse to be able to scroll it. What is causing the problem?"
One of the methods of correction found on the Microsoft Answers site, for those using Windows 7 and Microsoft Word 2013:
"In Word 2013 click File > Options > Advanced" then scroll down to the "Display" section andcheck the box "Disable hardware graphics acceleration"
YouTube video showing the steps:https://www.youtube.com/watch?v=zNlCsnsiMRU
This method has not worked for all users and may not correct the problem for all files.