Connection pro Micro via USB with 1.6.5

Hi,

I've updated my Arduino software to 1.6.5 today. And now i can't connect my Arduino Pro Micro over USB.
The only Port to select is COM1. But i can't Upload any Code.
There is no error Message. It just say "uploading" and nothing happens...
How can i verify i installiert the correct driver and select the right Port?

Thanks for help!