I've an Asus Maximus III Gene paired with a i3 540. Graphics card is a 660 GTX. When I turn it on, all the lights and fans come on but the PC won't POST. I've reseated everything that can be reseated to no effect. All cables are secure and correctly inserted.
So, what am I missing? I'm really stumped as to why it's not POSTing at all. Both motherboard and CPU were pulled from working machines so they shouldn't be an issue.