There are French Language forums here.
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Do a System Restore to a date before you had this problem:
"How to Do a System Restore in Windows 8 and 8.1"
http://www.eightforums.com/tutorials/4692-system-restore-how-do-windows-8-a.html
Or:
See if this assists you.
You obtain your Bluetooth software/drivers, IF your machine is designed to use Bluetooth from your manufacturer's website if not installed by default.
If not supplied on your device by the manufacturer, you may have to buy a USB Bluetooth Adaptor.
And in the Charms Bar > Settings > Change PC Settings > PC and Devices > Bluetooth > turn it on.
Connect a Bluetooth device
http://windows.microsoft.com/en-AU/windows-8/why-isnt-windows-finding-device
Cheers.