Plugged in 4 pin, Computer won't start.

Fevershaking · May 18, 2014

Hello.

So, I just put together my first system. I needed a 8-pin plug for the CPU power area, But My PSU didn't come with one (Which I don't understand why, as it's a newer PSU). After looking around on the forums, I found out I could just plug in a 4-pin and it'll work fine, So that's what I did. When I hit the power button, Everything inside the computer starts, such as the fans and such, and even the power LEDs on my case show, but Nothin shows up on my monitor. Am I doing something wrong?

Specs

Cheifmax 550w PSU
AMD A10-5800k
Seagate Barracuda 1TB
Gigabyte F2A55M-HD2
Stock CPU fan *As of now*
8GB of Ram (2x4GB)

icraft · May 18, 2014

What is the PSU wattage and specs?

unksol · May 18, 2014

You need to post system specs when asking questions. and read the stickies.

Follow these directions
www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Shaun o · May 18, 2014

You can only get away with using a four pin on a board that has requires eight pins under a condition.

That the board does not have a Pci-e based card in its slot.
The reason is because it is two phases of 12v supply.

Four pins on the block are used to drive any extra power to the cpu.

And the other four pins supply 12v at about 75w of power from the motherboard to the Pci-e card slot/ slots.

If the system uses just on board video, then the four pin must be connected to the right four pins out of the eight pin block.

Short of that if you do have a Pci-e based graphics card you will need to no doubt buy a Psu with eight pin double 12v phase.
And insure it has enough voltage and amps to drive the pci-e based graphics card.

Make sure if you have a Pci-e based card in the slot that you have also connected the extra 12v feeds from the Psu direct to the card. If the Pci-e based card requires them.

Or the system may fail to boot due to a lack of extra power to the graphics card. Or no signal.

Also be aware that the board is in factory default mode, so the primary display output signal will be coming from the motherboard video output ports if it has on board video.

You must connect the monitor cable to this, enter the bios and change the order what graphics device to initialize first for display after it.

So in the order Pci-e must be selected.
Once done save the settings before exiting and change the monitor lead from the motherboard to the back of the Pci-e based graphics card.

Check all of the above.

Fevershaking · May 18, 2014

Shaun o :

You can only get away with using a four pin on a board that has requires eight pins under a condition.

That the board does not have a Pci-e based card in its slot.
The reason is because it is two phases of 12v supply.

Four pins on the block are used to drive any extra power to the cpu.

And the other four pins supply 12v at about 75w of power from the motherboard to the Pci-e card slot/ slots.

If the system uses just on board video, then the four pin must be connected to the right four pins out of the eight pin block.

Short of that if you do have a Pci-e based graphics card you will need to no doubt buy a Psu with eight pin double 12v phase.
And insure it has enough voltage and amps to drive the pci-e based graphics card.

Make sure if you have a Pci-e based card in the slot that you have also connected the extra 12v feeds from the Psu direct to the card. If the Pci-e based card requires them.

Or the system may fail to boot due to a lack of extra power to the graphics card. Or no signal.

Also be aware that the board is in factory default mode, so the primary display output signal will be coming from the motherboard video output ports if it has on board video.

You must connect the monitor cable to this, enter the bios and change the order what graphics device to initialize first for display after it.

So in the order Pci-e must be selected.
Once done save the settings before exiting and change the monitor lead from the motherboard to the back of the Pci-e based graphics card.

Check all of the above.

Thanks for the reply. I don't have a PCI-E based component in my System. For now, I'm using Onboard in till i can get one, but for now, I don't, So That's not the problem. You also said that the 4-pin mus be plugged into the Right of the 8-Pin block, but it seems it only fits into the left.

Fevershaking · May 18, 2014

unksol :

Sorry. I updated the post with my specs, and I I read that Link you sent. Still don't know what's wrong.

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Plugged in 4 pin, Computer won't start.

Fevershaking

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icraft

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unksol

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Shaun o

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Fevershaking

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Fevershaking

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