First of all I don't know where to place my topic in your forum, I hope I don't disturb you. I had a problem on my O/S few weeks ago, resolved now. But some told me that it could be a ComboFix malfunction.
The person said :"It seems that this is getting to be a common problem! I had exactly this error introduced after running ComboFix and doing a few other things to solve a totally unrelated problem. This has left me wondering whether ComboFix may have disabled the HID by introducing the space and then not removing it after."("Original post Here on the official Microsoft Support Forum"
I suggest you to check your software on this point. Thanks ;-)