The disclosure relates to a hinge assembly (70) and a tablet-notebook hybrid computer (10). The hinge assembly (70) comprises a hinge (40) for pivotably connecting a base member (20) of the tablet-notebook hybrid computer (10) to a tablet member (30) of the tablet-notebook hybrid computer (10); an actuator (51) fixed to the hinge (40); and a support member (50) pivotably connected to the tablet member (30) via a pivot shaft (52). When the tablet member (30) rotates towards an open position with respect to the base member (20), the support member (50) is actuated by the actuator (51), rotates away from the tablet member (30), and provides addition support for the tablet member (30).