As the topic states. I've reformatted. Attempted to mount as NTFS folder, and as a drive letter in every combination. I've restarted services, rebooted the machine. Fresh Windows 7 install.
I can manually access the disk, copy files, run tests, etc.
See attached.
Edit; Resetting all settings option from the troubleshooting menu seems to have corrected the issue. Disregard.