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Mobo (c6h) suddenly turn on itself in sleep

Level 7

Does anyone know what's happening to my mobo? This is the second time this happens after I put my pc to sleep. Last time I fixed it by removing the bios battery and plug it in again later, but this time it doesn't work. Is my mobo broken?

For more info (after I turn off and on my psu):
My PC will turn on automatically if I switch my psu on, it will and can not post, fans will ramp up and down like crazy.

The problem was caused by my psu (which faulty). It will turn on and off by itself with only power cable plugged in. Hope this can help others who have the same problem.