Hi there BoyBoy,
I'm not personally experienced with your particular machine, so I don't know what is involved.
You will probably get the back off and find that there is a second line of defence................my tip for all lappies is get a sheet of paper and some adhesive tape. When you take out screws stick them to the paper and write down where they come from ;)
Mind you, I don't think that Sony booby trap their laptops like the scumbags at Apple :eek: