Since you cannot find the Surface Type Cover under Device Manager, we suggest that you follow the steps below:
- Go to Device Manager.
- Under Other devices, you will find two unknown devices.
- Double tap one, click on driver tab, click on Update driver.
- Click on Browse my computer for driver software.
- Click on Let me pick from a list of device drivers.
- Select Keyboard, then click Next
- Select HID Keyboard device and click Finish.
- Repeat for the second unknown device.
Reply to us with the status of your issue. We'll be happy to assist you.
Regards.