Hello i can help you with the manual:
http://www.gigabyte.com/products/product-page.aspx?pid=1792#manualThere are no fuses on the mainboard, not even in the powersupply.
The power supply maybe contains a thermal switch, but it does not pay to let it be changed.
The solution is to buy a new or used power supply.
If still no life when the power supply is changed, the mainboard is dead.
Good luck
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