My laptop Bluetooth Can’t Detect my Mobile.

I'm trying to transfer some videos & pictures from my Sony w800 Mobile Phone to my laptop, with the help of Bluetooth. But my laptop is not detecting my cell phone via Bluetooth. I've tried to connect another mobile as well, it is also not being detected.
I've Restarted my Laptop & Turned On the Bluetooth again, but nothing happened.

Please tell me, what should I do?
