Your power supply could have gotten fried, even though power is going into the PS if it has been hit with a large charge the current will go in but not come out to your mother board for saftey reasons, you could always put in a new PS and try that in it see if it works, Power supplys are dirt cheap anyway so no harm in trying. But if the new power supply wont work something has gone in your mother board, it wont be your processor because it would boot up but then say "Error you processor is ****ed"
Next time try buying a surge plug, these will stop most power surges that happen in thunder storms and protect your pc.
