Windows 2012 R2 DC Backup error

 

I'm trying to back up the PDC emulator and it's failing:
________________________________________________

Writer Failures
Writer Id: {AFBAB4A2-367D-4D15-A586-71DBB18F8485}
Instance Id: {948F6B36-BCBD-4361-AA88-D84A8CFBF7F4}
Writer Name: Registry Writer
Writer State: 9
Failure Result: 800423F4
Application Result: 1
Application Message: (null)
   Component: Registry
   Logical Path: (null)
   Component Result: 800423F4
   Component Message: (null)
       File Spec: C:\Windows\system32\config\default Recursive: 0
       File Spec: C:\Windows\system32\config\SAM Recursive: 0
       File Spec: C:\Windows\system32\config\SECURITY Recursive: 0
       File Spec: C:\Windows\system32\config\software Recursive: 0
       File Spec: C:\Windows\system32\config\system Recursive: 0
       File Spec: C:\Windows\System32\SMI\Store\Machine\schema.dat Recursive: 0
       File Spec: C:\Windows\system32\config\COMPONENTS Recursive: 0
       File Spec: C:\Windows\system32\config\DRIVERS Recursive: 0
       File Spec: C:\Windows\system32\config\BBI Recursive: 0
*-----------------------------*

Script ran from "Administrator: Windows PowerShell ISE"

Any help would be greatly appreciated, Thank you