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PC won't start, TPU LED lights up.

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Oskiator Posted messages 216 Status Member -  
Oskiator Posted messages 216 Status Member -
Hello,

I recently built a PC. Everything was fine, but when I tried to connect one of my fans (from the case, a Coolermaster Storm Scout) that wasn't connected, and I powered on my PC, it turned on for 2 seconds and then shut off. After that, a red LED lit up on my motherboard (p8z58v le). It blinks very quickly. For now, I can't turn my PC back on. Does anyone know the cause of the problem?
Thanks in advance.

Best regards,

Oskiator.
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4 answers

Answer 1 / 4
Erwan031284 Posted messages 168 Registration date   Status Member Last intervention   2 392
 
The fan seems to be defective and is causing a short circuit.
Unplug it, and it should return to normal.

--
Because the manuals don't say everything...
But not nothing either, right!
1
Oskiator Posted messages 216 Status Member 19
 
I have unfortunately already tried. I also checked the power supply to the motherboard. But I don't see anything.
0
Oskiator Posted messages 216 Status Member 19
 
Uh... Do long hair also cause short circuits?
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Erwan031284 Posted messages 168 Registration date   Status Member Last intervention   2 392
 
I don't know if a hair is an electrical conductor... low voltage. Conduct the experiment and conclude.

For the electrical issue, unplug all non-essential peripherals and reboot... then turn off, and reconnect one peripheral at a time, and boot up again, until you identify the culprit.
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Oskiator Posted messages 216 Status Member 19
 
I only connected the motherboard. It doesn't work.
Maybe I connected the wrong cable in the wrong place...
I have a CM Storm Scout. 3 fans built into the case. 2 wires went to a white connector which was itself connected to another connector. The first connector had 4 large pins, the second had 4 holes. I connected the first to the cable that came from the power supply, but only 1 fan turned on, from the 2 that were at the top of the machine (the 3rd was also powered by the same cable from the PSU). Not seeing a 3rd cable, I then thought that I should also connect the 2nd connector that powered the 2 wires. With my equipment, I received a cable with a 6-pin connector on one side for the power supply, and on the other side, a white connector of the same size as the one I wanted to connect. It only had 3 large pins, but it seemed to fit anyway. I thought it would be wise to disconnect the 1st connector, just in case these 2 connectors powered the same fan, to avoid burning it out.
Then I powered it on... It turned for 2 seconds, then nothing. (I couldn't even see which of the two fans turned on.
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Answer 2 / 4
Oskiator Posted messages 216 Status Member 19
 
Another note, when I turn off and then back on the power, the red LED is initially stable, then it starts to blink more and more quickly.
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Answer 3 / 4
Erwan031284 Posted messages 168 Registration date   Status Member Last intervention   2 392
 
The power supply unit is probably fried.

--
Because the manuals don't say everything...
But they don't say nothing either, huh!
0
Oskiator Posted messages 216 Status Member 19
 
Thank you for your help.
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Oskiator Posted messages 216 Status Member 19
 
I followed a tutorial to power on the power supply without the motherboard. Both the power supply and the hard drive started up fine. Is it still possible that the power supply is the culprit, or should I rather look towards the motherboard?
0
Erwan031284 Posted messages 168 Registration date   Status Member Last intervention   2 392
 
"Is it always possible that the diet is to blame?"

Yes

"should we instead look towards the motherboard?"

the motherboard is not ruled out either.
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Oskiator Posted messages 216 Status Member 19
 
In that case, what test(s) should I perform to find the problem?
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Erwan031284 Posted messages 168 Registration date   Status Member Last intervention   2 392
 
Test the power supply with another PC, and the motherboard with another power supply...
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Answer 4 / 4
Erwan031284 Posted messages 168 Registration date   Status Member Last intervention   2 392
 
" If the power supply is faulty, could it damage my equipment? "

It depends on the defect...

" And does the CPU cable need to be connected? "

... Seriously? If I told you: of course not! the CPU works without power... does that sound believable to you?

" Because my Corsair power supply has a 6-pin CPU connector while the motherboard of my other PC is designed for a 4-pin connector. "

The Corsair power supply is designed to power the latest CPUs, on motherboards that multiply power pins for greater stability.

" Does this system work like fuses? "

I don't know, but I don't think so.

" Isn't it just a matter of replacing a small part somewhere? "

I've never heard of any kind of fuse on a motherboard. And to be honest, I'm somewhat surprised.

--
Because manuals don't say everything... But not nothing either, okay!
0
Oskiator Posted messages 216 Status Member 19
 
I connected another power supply to the motherboard, but without connecting the CPU since it wasn't the same. When I turned on the power supply, the TPU LED also lit up, but it didn't blink this time.

I suppose I have to conclude that the motherboard is fried.
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Oskiator Posted messages 216 Status Member 19
 
In any case, thank you very much for your help, I learned a lot.
0