It looks like the most likely cause is the cbfs6.sys driver. (Callback File System Driver from EldoS Corporation
Callback Technologies | System-level components for data storage and access control). It also seems to be used be some cloud storage providers. Are you familiar with this driver or use any cloud providers that may use it? We can try disabling it as a temporary test or removing it if not needed.
*** WARNING: Unable to verify timestamp for cbfs6.sys
*** ERROR: Module load completed but symbols could not be loaded for cbfs6.sys
Code:
fffff880`04cd9000 fffff880`04d4e000 cbfs6 T (no symbols)
Loaded symbol image file: cbfs6.sys
Image path: \??\C:\Windows\system32\drivers\cbfs6.sys
Image name: cbfs6.sys
Browse all global symbolsfunctionsdata
Timestamp: Fri Sep 9 13:23:14 2016 (57D31A32)