Hi Merry,
Try and follow the suggestions from the given article:
Windows Update error 0x8007000d:
http://windows.microsoft.com/en-ca/windows-8/windows-update-error-0x8007000d
Important : While performing refresh apps you installed from websites and DVDs will be removed. Apps that came with your PC and apps you installed from the Windows Store will be reinstalled. Windows puts a list of removed apps on your desktop after refreshing your PC.
Thanks,