hello i'm new here, i have a dell dimension 3000 here, it belongs 2 my aunt, during a bad lightning storm, she turned her pc off by the power button, the next morn, she tried 2 power it up, but no power.. The light on the board is lit but that's it...I have tried different power supplies and memory, but no luck...I tried disconnecting the cables also and just use the power supply cables, still no power, can someone tell me what else to do....