This unit will send the inrush through to the circuit. At that point, the breaker will trip but the APC will remain on allowing the pc to power on. I would recommend buying a larger APC that specifies the allowable inrush. Then you could unplug the APC from the wall to allow the PC to use the power from the APC to power on , then plug the APC back in to the outlet on the wall.
Hope that helps.