Hi Benesch,
Welcome to the community,
First lets try to reset your AutoCAD. Go to Start > All Programs > Autodesk > AutoCAD 2013 > Reset settings to default.
Please make sure you saved a backup if you do not want to loose custom settings.
Please let me know if that doesnt work then I will take another approach
If this post solved your issue please mark as solved and Kudos are always welcome 😃
Jo - Ann
Twitter: @JoAnn_Hogan
Revit Architecture Certified Professional / Revit Structure Certified Professional / AutoCAD Certified Professional