I had also this issues with my bluetooth and wifi after formatting my laptop.
It happens because, the driver for the bluetooth is not correctly installed. Means you've to install correct driver for your H/W device then it will work properly.
It will show that your driver is installed correctly and working properly but it won't.
Searched the latest driver for your Bluetooth hardware and supported platform and then install.
Any how I will recommend you to use data cable to transfer files because It has more transfer speed than bluetooth.