Fans On, Mobo Light Green Nothing works

I know my computer is not in standby mode nor has it ever had this problem. All fans run as soon as the power supply is switched on motherboard light comes on as it has power. Cd drive lights come on…trays will not open and hard drives will not spin up. I don’t think the computer even goes through POST.

My question is, “Is it the motherboard?” I know none of the switches are stuck as I undid both of them and same results, video car out same results.

So I’m down to the powersupply or the mother board?

My guess is the mother board, I just wanted more advice before I ordered a new one.

The only thing I did was unplug it from the wall, and it was turned off when I did that.