if is your first time well lucky i were affected twice already by those ,all info here

Starting from 10.02.2015 we have implemented the miners power decrease and power outages. Every day at 00:00 EST 5% of the members with activated accounts will be affected by "Power Outages" which means that their rigs will be turned off and they will need to login and start the rigs to continue hashing(earning), this will increase the earnings for active members. By power decrease will be affected all mining rigs. The rigs will lose a random amount of power between 0 and 3% daily untill their rig goes below 5%, then the rig will be broken and will need to be repaired.


soo as said already go into mining rigs and start them again and back to earnings