Dropped laptop Help please

[bodgit]

Ok so I've dropped my laptop a dell 1545 for the umpteenth time but this time its serious. Previously I,ve replaced the screen and bezel and all was well. This time my foot got caught in the power cable and yanked it off the window. Lid is in a bad way hinge threads torn off , screen not cracked but bezel broke again.
When I turn it on i get the usual boot up sounds but no picture. I connected it to the tv but there,s no signal output. I dont really want to repair it this time but dont want to lose all my photo,s etc. Im not too clever with the workings but im thinking of buying a second hand 1545 and was wondering could I do a straight hard drive swap or if I get another model is there a way to recover my info from the hard drive.
All explanations in simple terms please