Mainframe
In this case, it was just burned out.
Bridge
Klaxons blarred all across the ship, warning the crew that something was up and that they needed to get to their combat stations. Blast shutters began to close shut, sealing the bridge and engineering from the rest of the ship.
"All crew, this is your Shipmistress speaking," spoke Sa'kira as she began to transmite an image of the object - the asteriod that had breached their defenses - to the entire crew. "What many of us were hoping was just a pirate or terrorist ship, has turned out to be an asteriod. We don't know yet how it got by our sensors. Current trajectories show that it's headed straight for Levia, if it impacts the surface, there's no telling how much damage it'll do the planet. Our mission now is to try and chip away at it, in hopes that between our ship and the rest of the fleet we'll be able to destroy it before it gets to the planet - failing that - at the very least blunt the amount of damage it'll due to the planet itself. I want my marines in the infirmary, we don't have a medic right now, so grab any med-kits you find. I want one marine on the bridge, and one in Engineering."
She stopped for a moment to send an authorization code to permet Shar, Erm'olai, and Tite'Yanus access through the blastdoors. "We don't know what is going to happen in the next few minutes, so be prepared for anything."
Sa'kira sighed and cut the line, then looked at the display. "Def, the ACI should be fully active now, bring it online so you'll be able to see not only the ship but everything around us. I'll need you to perform some pretty tricky flying, think you can do it?" If Def turned around, she'd notice Sa'kira smiling.
Engineering
"Crap!" scowled Quin as she stared down at her terminal. "First that and now this," she began to type away on her keyboard. "Guess we'll have to contend with that later then, monitor shields and weapons, I'll keep an eye on engines."
"See if you can free up power from unused areas of the ship, the cabins, recreational lounge, cafeteria, those are good areas to start," suggested Quin.