Andy Cuffe writes:

If the problem is on a BGA IC, you're out of luck. I guess you could
try putting the whole board in an oven hot enough to melt all the
solder. It sounds crazy, but that's how it was originally soldered at
the factory.

But they ususally do this before the plastic parts are attached.

Try it at home and you may find slag where you once had DIMM sockets.

-- David