Hello,
It would appear that compatibility is not directly related to the OS but to the ability of the system to connect to LE (Low Energy) bluetooth devices.
This may be related to your laptop's hardware (i.e. the bluetooth chipset does not support the functionality) or your drivers (the chipset might not have the latest drivers enabling LE connections loaded). From what I understand, in Windows 7, the functionality is not natively supported.
You could buy a Bluetooth dongle that supports the functionality, but you need to make sure that they provide you with the correct drivers for Windows 7.
I hope the above helps.