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Pc won't turn on, but Motherboard has power -Fixed! Bad PSU.

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  • Power
  • Motherboards
Last response: in Motherboards
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August 15, 2014 8:49:29 AM

I just finished building my first pc at about 4 am in the morning, only to have the rather dissapointing /nothing/ happen when I pressed the power button on. Darn.

My PSU is working as well as my motherboard, and I know this from the LEDs on the mobo- the power one is always on, and toggling the TPU or EPU on/off also shows their LEDs to be on.

The Mobo also has LEDs supposedly to show problems with the CPU and RAM, but neither are on- though I don't know if that actually means anything before the PC has really been /turned/ on.

When I press the power button, nothing happens. I've tried unplugging the power SW from the ASUS Q-connector and plugging it in directly into the board, but still no luck. I've tightened down all the RAM, the Graphics card, even tried swapping out the RAM cards one at a time to see if that was the problem. At this point, I'm unsure what to think, but I'm leaning towards a DOA CPU, but maybe it's just a faulty case power switch. The switch has power LEDs, but unlike the motherboard, they have not yet turned on, even when I [;plugged them in alone.

Are there any other tests I should do before I give it up? Possibly something with the graphics card? It has shown no signs of life, though (yet again) I don't expect it to before the PC is actually turned on.

Thanks in advance!

-Rear

More about : turn motherboard power fixed bad psu

a b V Motherboard
August 15, 2014 9:01:59 AM

Hello... you just need a momentary touch/connection to the Power ON Pins, with a small tipped screw driver, to get the power/Boot up to start working... try that.
Do you have the Power Supply Switch in ON position?
Do you have the power connector to the MB for your CPU?
Do you have the CPU fan connected to the MB CPU fan connector?
LED's have Polarity to them... sometimes you have to reverse the LED pin connections for them to work properly.
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August 15, 2014 9:21:11 AM

Ironsounds said:
Hello... you just need a momentary touch/connection to the Power ON Pins, with a small tipped screw driver, to get the power/Boot up to start working... try that.
Do you have the Power Supply Switch in ON position?
Do you have the power connector to the MB for your CPU?
Do you have the CPU fan connected to the MB CPU fan connector?
LED's have Polarity to them... sometimes you have to reverse the LED pin connections for them to work properly.


I will try that!

The PSU is on, the MB has the 4 x 2 PSU connector plugged in, the CPU fan is plugged in at the CPU_FAN connector
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a b V Motherboard
August 15, 2014 9:38:57 AM

Hello... What MB and PS are you using? Do you have a 20 or 24 pin PS to MB connection? Make sure you fill the connector on the MB.
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