I have a standalone DC in an isolated lab. I have installed the SUR tool and found no errors. I ran SFC and found no errors. I have attempted to install Windows Backup feature using Powershell, but received the same error about the computer needing to be restarted. Powershell cmdlets will list all of the installed roles and features. The rest of Server Manager works without problems.

What can I do to get Server Manager Roles and Features working properly again?

Picture of Error:

CheckSUR.log:

=================================
 Checking System Update Readiness.
 Binary Version 6.1.7601.21645
 Package Version 13.0
 2011-11-28 13:20

Checking Windows Servicing Packages

Checking Package Manifests and Catalogs

Checking Package Watchlist

Checking Component Watchlist

Checking Packages

Checking Component Store

Summary:
 Seconds executed: 413
  No errors detected
 (w) Unable to get system disk properties 0x0000045D IOCTL_STORAGE_QUERY_PROPERTY Disk Cache

CheckSUR.persist.log:

=================================
 Checking System Update Readiness.
 Binary Version 6.1.7601.21645
 Package Version 13.0
 2011-11-28 13:20

Checking Windows Servicing Packages

Checking Package Manifests and Catalogs

Checking Package Watchlist

Checking Component Watchlist

Checking Packages

Checking Component Store

Summary:
 Seconds executed: 413
  No errors detected
 (w) Unable to get system disk properties 0x0000045D IOCTL_STORAGE_QUERY_PROPERTY Disk Cache