Forget that last post, I've sorted it. My aged memory suddenly remembered where I've seen this before and the fix for this particular problem is this..
Open 'Device Manager'
Disable 'Unknown device'
Go to 'view'>> 'Devices by connection'
Find and disable 'Microsoft Uaa bus driver'
Uninstall 'Uaa bus driver'
Then either rescan devices or install the new driver from it's location.
It's just worked for me and I hope this will help others with a similar problem.
Ohhh, the sound of sweet music once more..