[SOLVED] Computer Does Not Turn on with Graphics Card

[jakobnmnn]

Hello,

Yesterday I started to assemble my first own computer. However, with my Zotac Geforce GTX 1070 6+2 pin cable (PCI-E) inserted into my Corsair CX750M PSU, my computer does not boot at all. It does not flash; it does not move, it just stays quiet. After plugging out the cable (booting my PC without a graphics card), it works just fine. My monitor then says "Signal Not Detected" likely since it did not find a graphics card. Yes, my graphics card is inserted into the corresponding slot, and everything else seems to work just fine.

I am not very experienced, and I tried everything that appeared reasonable to me. I used the adapter that came included with the graphics card, but the same issue arises here. I do not know if that changes anything, but my monitor uses HDMI, and the cable is directly plugged into my graphics card.

Thank you!

 

[viktorojohnsen]

Hi,

Don't know if it's possible for you, but do you have another PC, from which you can pull the 6+2 pin cable (PCI-E)? 😀

I experienced something alike with a Dell Rack PC, where i couldn't boot when pulling the power from the PC itself - turned out it was the pin cable that the PC rejected (it worked flawlessly on other PC's, but the Dell PC didn't like it so much apparently)

If you can't pull power from somewhere else you can try plugging the GPU in the PCIE slot without connectiing the cable and see if you can boot this way. If so, i think it's related to the cable.

 

[13thmonkey]

Hi,

Don't know if it's possible for you, but do you have another PC, from which you can pull the 6+2 pin cable (PCI-E)? 😀

I experienced something alike with a Dell Rack PC, where i couldn't boot when pulling the power from the PC itself - turned out it was the pin cable that the PC rejected (it worked flawlessly on other PC's, but the Dell PC didn't like it so much apparently)

If you can't pull power from somewhere else you can try plugging the GPU in the PCIE slot without connectiing the cable and see if you can boot this way. If so, i think it's related to the cable.

As written this is a very poor suggestion, there is no standard for the PSU end of the cable and therefore there is no guarantee that someone else's 6+2 cable will fit, or if it did fit as the same pin-out at the PSU end, this could literally kill his system.

 

[mtracy1991]

Hello,

Yesterday I started to assemble my first own computer. However, with my Zotac Geforce GTX 1070 6+2 pin cable (PCI-E) inserted into my Corsair CX750M PSU, my computer does not boot at all. It does not flash; it does not move, it just stays quiet. After plugging out the cable (booting my PC without a graphics card), it works just fine. My monitor then says "Signal Not Detected" likely since it did not find a graphics card. Yes, my graphics card is inserted into the corresponding slot, and everything else seems to work just fine.

I am not very experienced, and I tried everything that appeared reasonable to me. I used the adapter that came included with the graphics card, but the same issue arises here. I do not know if that changes anything, but my monitor uses HDMI, and the cable is directly plugged into my graphics card.

Thank you!

Hi jakobnmnn,

Hopefully this can be resolved for you. I have a few suggestions:
1. Try utilizing a different cable from the GPU onto the PC.
2. Ensure that the GPU is snug in the PCIe slot.
3. If the first two steps haven't worked, try putting the GPU into another PCIe slot.

 

[viktorojohnsen]

Hi,

Don't know if it's possible for you, but do you have another PC, from which you can pull the 6+2 pin cable (PCI-E)? 😀

I experienced something alike with a Dell Rack PC, where i couldn't boot when pulling the power from the PC itself - turned out it was the pin cable that the PC rejected (it worked flawlessly on other PC's, but the Dell PC didn't like it so much apparently)

If you can't pull power from somewhere else you can try plugging the GPU in the PCIE slot without connectiing the cable and see if you can boot this way. If so, i think it's related to the cable.

As written this is a very poor suggestion, there is no standard for the PSU end of the cable and therefore there is no guarantee that someone else's 6+2 cable will fit, or if it did fit as the same pin-out at the PSU end, this could literally kill his system.

Don't know if i didn't make myself clear or you misunderstood what i wrote - potayto, potahto

I'm saying he should pull the power from another PSU he is sure that works, not switching cables.

This could tell us if the issue is related to his new PSU or the cable for that matter.

Else i suggested that he connected the GPU to the PCIE slot without connecting the power, to see if the system can boot this way.

No danger, no harm done.

 

[jakobnmnn]

The computer still boots if the GPU is only in the slot, but not connected to the power supply. However, as soon as I connect the PCI-E cable to the graphics card and then the power supply, it does not boot anymore. No, unfortunately, I do not have another computer.
Thank you for your answer(s)!

 

[viktorojohnsen]

The computer still boots if the GPU is only in the slot, but not connected to the power supply. However, as soon as I connect the PCI-E cable to the graphics card and then the power supply, it does not boot anymore. No, unfortunately, I do not have another computer.
Thank you for your answer(s)!

Definitely sounds like something is shorting when cable is attached.

I would be careful leaving the power on as long as the issue is present as it might cause damage to the hardware.

Things i can think of is responsible for the issue:
1. The cable is damaged
2. The power supply is damaged - or atleast the wires that run from the PSU sockets to the cable plug are
3. The GPU i damaged.

To proceed further you need to troubleshoot each things individually - or just troubleshoot 2 and 3 - if both works it's probably the cable.

2. Do you have other PCIE outputs from the PSU you can plug the cable into? Maybe you've already tried. (make sure they are meant for GPU and not only small miscellaneous)
3. Is it possible to test the GPU in a friends setup or so? Just to make sure it works in a, already, fully functional setup.

If all this troubleshooting is too much for you i would recommend talking to the PSU vendor. This is also a good idea, as they can maybe advice you doing the same things as we would advice you to - but when they give you the advice directly it won't affect the warranty 😀

 

[jakobnmnn]

I do not think that the power supply is damaged. The motherboard turns on just fine since it then runs the fans and my CPU cooler. It is powered by the power supply.
I am not sure whether or not the GPU is the issue. One time, when I did not plug in the +2 pins into my power supply, I have gotten the error message that I need to plug in all of the PCI-E cables.
I have another cable I can use, but I am facing the same problem when trying to use it.
Below, I am attaching a screenshot of a cable that came with the graphics card. I suppose this is only an adapter I can use, but maybe there is more to it:
https://draconiajakob61.s-ul.eu/FGRSLDYo

 

[viktorojohnsen]

As 13thmonkey wrote, you should be really careful when using other cables.

https://www.gamersnexus.net/guides/2702-psa-on-mixing-modular-psu-cables-dont-do-it - here's why.

Regarding your picture - maybe it's time for me to get some glasses - is it male/male or male/female?

Anyways, try the cable shown on the picture. As long as you dont connect it directly to the PSU there should be no danger.

What's important is that you make sure only to attach cables to the PSU that came with it, as it is the most secure way to stay away from extreme shortings - as they explain in the link.