This warranty does not cover (a) damages caused by acts of God, including flood, erosion, or ear thquake, but excluding lightning on products with Power Blocker™ technology; (b) damages caused by a sustained low voltage situation, or a low voltage disturbance, including brownouts, sags, or power outages; (c) damages caused by war, vandalism, theft, normal use wear-and-tear, depletion, obsolescence, abnormal care or uses, or abuse; (d) damage due to non-authorized program or system equipment modi