I believe that the 6150 is an integrate graphics chip on the motherboard, this will not suffice to play BF3, you need to get a PCI-e Gaming Graphics card.
^+1 to ChrisCornell about the GFX card suggested.
Your CPU is also dated, the official min AMD recommendation is a 2.7 dual core.
To play this game and get enjoyment out of it you will need a new comp.
Even if you updated the Graphics card your CPU will be bottle necking your game.
I recommend you get a new computer to play BF3