Bluetooth Device on my Acer Laptop not found

Hi experts,

I have Acer Aspire 4730 laptop with in built Bluetooth device. I never use this, since I bought this laptop last year. But when I have to use it, I could not figure out why it can't detect any available device.

Originally, this laptop is running Windows Vista, but I decided to upgrade to Windows 7.

I searched on the Acer support page to download the driver's updated version. But there is no available driver for Windows 7, 64 bit. I don't know how the computer technician installed my Bluetooth driver on my laptop.

My laptop can open the Bluetooth screen when I press the Bluetooth button beside the keyboard on my laptop. But when I try to search it using any devices, it cannot be detected. Even if I tried searching on the device I tried, all I can see is the blank screen with a text written in the middle of the screen that says, no items match your search.  I tried a Nokia phone so far and an Android phone. But none of them works.

I want to know how I can fix the settings for this. From the Acer site, the Bluetooth device installed on my computer is from Broadcom.  If anyone knows about this,

Please let me know.

Thanks.