I just picked up a Corsair CX750M, that should do the trick. I'm going to take the Apevia one and see if my pickaxe will go through it.
Learn from the experience. Apparently a PSU was completely defective; motherboard was just fine. PSUs must not cause motherboard damage (for a long list of reasons). A defective motherboard must not damage any properly designed PSU. In fact, industry standards define the thickness of a wire used to short out all PSU outputs. And even that 'every output shorted' test does not damage a PSU.
Instead of wildly replacing things, a defect could have been identified with one minute of labor using a digital meter. But again, learn from the experience.
How do you know a spike caused damage? Most PSU failures are directly traceable to manufacturing defects. If a spike caused damage, then a list of other damaged appliances (maybe including the furnace, dishwasher, TV, and clocks) also exist. PSU and other defects due to counterfeit electroylete. Causing failures many years later. Another example of the reason for most damage - manufacturing defects.
To say more required numbers from that meter and other hard facts that would have identified the defect in minutes and the first time ... without even disconnecting one cable. Prosper by learning from this event. Learn how to better solve problems the next time - electronics and otherwise.