Error code 51
View all device and driver errors
CM_PROB_WAITING_ON_DEPENDENCY
This device is currently waiting on another device or set of devices to start. (Code 51)
Cause
The device is waiting on another device.
Solution
Select the devices that the device depends on using device control. If you can determine why such a device didn't start, you might be able to resolve it.
If you still have the same error, uninstall the device using device control and then scan your computer for hardware changes.