After updating windows 8.1 to Windows 10. Dell Venue 11 Pro- Blue tooth no longer functional

Below is the device manager note for the Atheros driver.

This device cannot start. (Code 10)

STATUS_DEVICE_POWER_FAILURE
QUALCOMM Atheros BluetTooth Transort driver

Qualcomm Atheros blue tooth UART Transport driver for Intel serial IO Host controller 9C63 windows 10

What is the reason and what is the cure?  

Help is necessary  New driver does not seem to be available as of today...

N0orm Radio

Thank you!