this should do it

Ok so first things first, you need the blue tooth module and a
specific cable, you need the 8-PIN 1.0mm cable to fit this.

Unfortunately you need to take every screw from the underside of the
laptop out, be careful not to lose these. Inside the hard drive
compartment are 2 more silver screws that need to be removed. The next
part is more scary.

The top cover needs to be removed. Start by gently peeling off the
cover with the power button on it. I found it easiest starting with
the corner of the green “e” button. Once this is removed gently pop
the keyboard out and remove the ribbon. To release the ribbon pull the
little black clamp down a couple of mm and pull the ribbon out, the
plastic cable should pull out of the lock and can be clamped back in
again at the end.

Once this has been done go ahead and remove the 2 black screws holding
the rest of the white plastic down to the laptop. The next bit is
scary again…

You now have to lift the middle layer of plastic off. Start with the
corner where the infer-red port is, and the other corner. The part
where the locking mechanism is, is slightly more tricky to pull back
but it will with the aid of lever.

Don’t totally remove this layer. Lift it up at an angle, just below
the green “acer aspir 7520” logo you will see 2 white ports. The
larger one has your hard drive attached to it. The smaller one labeled
“JP12” this is where your Bluetooth is fitted.

I hope this has helped you
Pleaes email me back if you want pictures. And please let me know you
received this email.

Guy Collins.
.