I got this old relic Dell Dimension 3000 here that I think may have been fried by lightning. Before I got a new power supply for it, nothing happened when I pushed power. Now with a new power supply it behaves the same, but I did notice now there is a green light on the motherboard, located just to the left of the front panel connection. That is pretty well it though. No fans spin at all, no drive activity, no other lights.
I dont really have any other way of testing hardware besides replacing it, but I am thinking it is all dead. Anyone have any other ideas to try?