Cause:
As the connection to the audio device is lost the assumption is, that Intel chip set drivers or USB controller drivers used by Microsoft Windows 7 cause this failure, as the audio device works again only when drivers are reinstalled through unplugging and reconnecting the device to the USB port.
Workarounds:
1. Plug in a PCI or PCI-e USB add-on card and use its USB ports for the audio device
2. Since the issue only occurs when the CPU is idle and its frequency drops below 1 GHz, hindering the CPU to drop below 1 GHz is therefore a possible workaround. This can be done by:
a. Disabling power saving features in BIOS, like Intel Speed Step Technology (aka. Runtime Power Management), or
b. Switching Windows' power plan to High performance (Control Panel / Power Options), or
c. Changing the minimum processor state of the current power plan to 50% (Control Panel / Power Options / Change plan settings / Change advanced power settings)
