Which version of Lightroom?
I have 5.7.1 and am using windows 8.1. i can import from the camera but it won't detect he camera in tether mode.
I had one PC that wouldn't detect a camera, and after searching I found that not all the necessary services were running. In Task Manager, try looking for the following (see the "Description" column):
- Windows Image Aquisition (WIA)
- Remote Procedure Call (RPC)
- RPC Endpoint Mapper
- DCOM Service Process Launcher
- Shell Hardware Detection
I also found I needed one more, which isn't normally needed:
- Remote Procedure Call (RPC) Locator
If any are not shown as "Running", right-click and select "Start". If that solves the problem, then you might want to change it so they start automatically. Right-click the service again, choose "Open services", find the service in that list, right click again, go to properties, and change the startup type to "Automatic"