To verify if the bluetooth device driver is properly installed you will have to check in Device Manager:
Right Click on My Computer, Select Manage and click on bluetooth device!
If the bluetooth device has a yellow mark , means the driver isn't installed.
And you can also check if you can locate a switch to activate the bluetooth device. Put it on!
If you can see the small bluetooth icon on your taskbar at the right just double click on it to activate it!