Consequences of disconnecting the ATX 12V?
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louxtix
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louxtix Posted messages 84 Registration date Status Membre Last intervention -
louxtix Posted messages 84 Registration date Status Membre Last intervention -
Hello,
What are the consequences of disconnecting the ATX 12V power connector from the motherboard while the PC is running? Can the processor burn out?
Configuration: Windows 7
Motherboard Gigabyte 78LMT-USB3 Rev 5
Processor AMD FX 6300
What are the consequences of disconnecting the ATX 12V power connector from the motherboard while the PC is running? Can the processor burn out?
Configuration: Windows 7
Motherboard Gigabyte 78LMT-USB3 Rev 5
Processor AMD FX 6300
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flo88
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Hello
Don't unplug!
First.
Then the consequences are that the CPU doesn't have enough power to run, which will cause everything to crash.
In principle, it won't have more consequences; it's like a power outage.
In two words:
Hello to you all
Don't unplug!
First.
Then the consequences are that the CPU doesn't have enough power to run, which will cause everything to crash.
In principle, it won't have more consequences; it's like a power outage.
In two words:
Don't!
Hello to you all
louxtix
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Actually, it's already done (accidentally) ... and since then, black screen, I'm looking for the cause.
Well, I'll clarify my situation a bit: I have a somewhat special (and shaky) setup with two power supplies. Let me explain, I have a graphics card that requires too much power from my main power supply, which is why I added a second power supply: 
And, I don’t really know why, but I connected the 12v ATX connector from the SECOND power supply to the motherboard. And that’s where the drama begins: the green wire (in the diagram) comes off => GPU turns off => no image => I reconnect it => nothing => I restart => nothing, and so on (I tried with only one power supply, without the graphics card, I cleared the CMOS, I tested the RAM... without success)
And all of this just to avoid buying a more powerful power supply...
And, I don’t really know why, but I connected the 12v ATX connector from the SECOND power supply to the motherboard. And that’s where the drama begins: the green wire (in the diagram) comes off => GPU turns off => no image => I reconnect it => nothing => I restart => nothing, and so on (I tried with only one power supply, without the graphics card, I cleared the CMOS, I tested the RAM... without success)
And all of this just to avoid buying a more powerful power supply...
Same deduction for me.
I think it's the power supply that took the hit first, the motherboard second, but if there wasn't an electrical arc when it got disconnected, I don't believe the motherboard was affected.
However, one thing to do if you haven't already tried: unplug the power supply from the wall, press the power button on the PC several times; this effectively drains the residual charge from the capacitors, both on the motherboard and the power supply. This sometimes does wonders, especially on power failures, much like in this case.
I think it's the power supply that took the hit first, the motherboard second, but if there wasn't an electrical arc when it got disconnected, I don't believe the motherboard was affected.
However, one thing to do if you haven't already tried: unplug the power supply from the wall, press the power button on the PC several times; this effectively drains the residual charge from the capacitors, both on the motherboard and the power supply. This sometimes does wonders, especially on power failures, much like in this case.