I just installed the Quadrino Nano firmware with the 64 bit driver.
I found I could not do it with a USB 3.0 port but the USB 2.0 port worked fine.
Norton Anti-Virus did not like the Advanced MultiWii Config program though.
About the issue with Norton, we are in the process of getting the FCT (Firmware Configuration Tool) signed with Windows.
This should eliminate some issues.
Are the drivers installed on both USB2 and 3 ports ?