I was having the same problem, but i found it:I hope you al understand how to connect the JBL Charge to a new BT device (press and hold the on/off button until it starts blimping red-blue) Go to the speaker on the right of the screenRight clickPlayable devices (or something)Turn the standard speaker offTurn the BT device (which you should see in the list)It worked for me and I hope for you all too!    
Hi  I'm trying to connect my JBL Charge Speaker bluetooth with my Dell Studio 15 laptop to listen music from my laptop, and cannot do it. I installed the drivers for bluetooth, and my laptop doesn't find my speakers! Do I have to do anything else? Can anyone help me? Is it possible to connect the speakers to my laptop? I think my bluetooth is it working in my  laptop because I could connect my cellphone... but not the JBL Charge... I have Windows Vista. Thanks!
Cannot connect JBL Charge Bluetooth