Hi,
So if the blue-tooth receiver is connected to the Surface you don't get this issue?
Suggestions:
I note you have an older Renesas USB 3.0 host controller driver installed? Is this intentional? I'd remove it if you don't need it.
Install the latest BIOS for your Surface:
http://www.microsoft.com/en-gb/downl....aspx?id=38826
Let me know how you get on.
Thanks,
James