Try this
mobile to laptop via bluetooth
++tethering …......via cable or wifi
OR....this
+++Activate Bluetooth on your mobile phone (usually found under the Settings menu) and set it to be discoverable or visible.
1. On the PC, find your Bluetooth program manager , look under My Computer > My Bluetooth Connections;
2. In the Bluetooth program, select the option to add a new connection or device, which will make the computer search for available Bluetooth devices and find your phone.
3. When your mobile phone appears, select it to connect/pair it to your laptop.
4. If prompted for a PIN code, try 0000 or 1234 and enter it on both the mobile device when prompted and your laptop.
5. When the phone has been added, you will be asked what service to use. Choose PAN (Personal Area Network). You should then have a working Internet connection.