There seems to be a white residue of the glue around the screwhole as well, but it is very slight.
Are you sure it isn't screw cement (Lock-Tite)? It is more likely that this is the case so just try unscrewing the screws and the bonds should break. Companies (and some individuals who build computers) use this kind of stuff to ensure that warranties are not voided by people poking around inside their computers or so that people don't try the old motherboard swap and then complain that it doesn't work and demand a new one.
I would not recommend any kind of solvent because if it dissolves the glue then it will, most likely, also dissolve the motherboard.
Pete
