I have the same problem on SB2 13" i7 since the August firmware updates.
There are three non-functioning drivers. I have run the Troubleshooter (din't fix anything) and I have uninstalled the drivers and rebooted the machine. The drivers reinstalled in the same failed state.
Here are some details from the Device Manager event logs (note I've rebooted multiple times, it does not resolve the issue)
Surface System Aggregator:
version 182.512.137.0
Status:
This device cannot start. (Code 10)
The request is not supported.
Event Log:
Device UEFI\RES_{37da9c3d-6b50-4dbf-82b8-46ca912d98f2}\0 requires a system reboot before it can be started.
Driver Name: oem169.inf
Class Guid: {F2E7DD72-6468-4E36-B6F1-6488F42C1B52}
Service:
Lower Filters:
Upper Filters:
Problem: 0xE
Problem Status: 0xC00002D2
Surface UEFI
version: 389.2268.769.0
Status:
This device cannot start. (Code 10)
The request is not supported.
Event Log:
Device UEFI\RES_{6726b589-d1de-4f26-b2d7-7ac953210d39}\0 requires a system reboot before it can be started.
Driver Name: oem167.inf
Class Guid: {F2E7DD72-6468-4E36-B6F1-6488F42C1B52}
Service:
Lower Filters:
Upper Filters:
Problem: 0xE
Problem Status: 0xC00002D2
Surface Dock Integration
version: 2.0.303.0
Status:
A driver (service) for this device has been disabled. An alternative driver may be providing this functionality. (Code 32)
Event log:
Device HID\VID_045E&PID_0904&Col05\7&198ab06f&0&0004 had a problem starting.
Driver Name: oem107.inf
Class Guid: {745A17A0-74D3-11D0-B6FE-00A0C90F57DA}
Service:
Lower Filters:
Upper Filters: SurfaceDockIntegration
Problem: 0x20
Problem Status: 0x0