Can you check the Device Manager if your card is being detected? Can you send me a screenshot of the Hardware IDs of these:
1. Device Manager
- Open Device Manager
- Click View -> Show Hidden Devices
- Expand Display Adapters and Other Devices category
- Provide a screenshot of these devices
2. On the Display Adapters
- Expand 'Display Adpaters' Category
- Right click the Radeon HD 6670, on popup menu select Properties
- On popup window, click the Details Tab
- On Details Tab, click the dropdown box, select Hardware ID and provide a screenshot.
3. Other Devices category
- If there is a device with a yellow ! mark, right click on it, on popup menu select Properties
- On popup window, click the Details Tab
- On Details Tab, click the dropdown box, select Hardware ID and provide a screenshot.