Hi,
I understand you need to install Office Professional Plus 2013, may I know why you still keep the Office 2010? What steps have you tried?
When installing Office 2013, please make sure no Office 2010 Application is running when installing Office 2013, also check the Task Manager that no Office 2010 application is running in the background.
One more thing, if you have Office 2010 32-bit, please also install Office 2013 32-bit; If the Office 2010 is 64-bit, Office 2013 also needs to be 64-bit.
To eliminate the influence by other programs, I suggest you perform a
clean boot, then install Office 2013.
Regards,
Melon Chen
TechNet Community Su