Question Is an ASUS P8 H77-M salvageable if it cannot be powered on when EATX 12V is connected?

zipswich

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Oct 9, 2009
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An ASUS P8 H77-M used to work perfectly for a few years, but has a barebone configuration now for the sake of diagnosis (no storage drive, no video card, no keyboard...).
If only the 24-pin main power connector is plugged in, shorting the green and black pins will start all fans including the CPU fan, but no display. If the 8-pin EATX12V connector is plugged in, nothing will happen.

Is there anything that I should try before concluding this ASUS P8 H77-M is dead?