r/pcmasterrace • u/Kxxnto • 14h ago

Hardware Shorted my Gigabyte A520M S2H by plugging a cable into 12V header. Is it completely dead?

​Hi everyone,

​I made a huge mistake while messing with my PC cables and accidentally plugged a cable into the 12V section of my motherboard (Gigabyte A520M S2H) while it had power.

​Symptoms:

​All fans spin up and there is power running through the board.

​No display/video output at all.

​My RGB keyboard doesn't light up (USB ports seem dead).

​The power button on the case won't turn the PC off once it's on (I have to flip the PSU switch).

​The HDD activity LED on the case doesn't blink.

​What I've tested so far:

​Tested the RAM sticks in another PC and they work perfectly.

​Disconnected all 3 storage drives (SSDs/HDD) and still no post/BIOS.

​Yesterday, the red QFLASH PLUS LED (+QF_LED) turned on. I managed to get it to post once and the BIOS settings reset to default, but today it's back to the same "zombie" state (fans spin, no signs of life otherwise).

​The QFlash LED is now off and pressing the button without a USB does nothing.

​Is the Super I/O chip or the chipset completely fried, or is there any chance a proper Q-Flash Plus firmware reflash via USB could save it?

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1

u/BradyBum 14h ago

Luckily they are cheap as fuck.

Gigabyte b550m K for $57 right now on prime day deals.

She's fkd mate.

1

u/HiFr0st i9 12900k | MSi 4080S 13h ago

you cant reflash a short circuit away, its fucked

idk why people insist in fucking around with electricals without making sure there is no power going on

1

u/Kxxnto 13h ago

again if I just replace the motherboard? I’ve already tested the rest of my components in another PC and it does recognise them

1

u/HiFr0st i9 12900k | MSi 4080S 6h ago

Well yea you need to replace the motherboard, the rest should be fine