sorted it.
updated the mouse driver but this didnt help so did a rollback and now it works fine.
sabrex wrote:we know the hdd in this unit has the following diameters
Height: 0.94cm (0.37 in)
Width : 7.01cm (2.76 in)
Depth: 10.01 cm (3.94 in)
so match that up with your drive you thinking of putting in im sure it will be fine though