Hello Jennifer, I have just resolved this problem on Word 2007.  I now have exactly the same problem on my Windows 8.1 computer with Office 2013.  How can I cure that please??

Happichap

Hi,

I noticed that you replied with this thread, you want to get rid of capitals at the start of every line in Word 2013. Please try to clean the "Capitalize first letter of sentences "option.

https://support.office.com/en-za/article/Automatically-correct-capitalization-88319b2b-4199-49e6-82d5-1138110e1714

Regards, 

George Zhao
TechNet Community Support