[SOLVED] GPU only works when I lay my case on its side

[Mo10Ko]

Hi all,

I just recently built an SFF build. I have the meshlicious case, which for those who know, it is a pain to plug in a display port or HDMI cable to the GPU. Basically, after fiddling around, I discovered that the GPU would not work if I had the case standing up, and in this SFF case, that means the GPU is vertical. However, when I lay it down, it works just fine. My conclusion is that I need an angled display port cable for this case. But it might not be as simple as that because if I start the PC standing up and lay the computer over it still does not display. Only when I start the computer on its side does it actually display, meaning maybe the pressure on the display port cable is not the culprit?

Here are my specs:
CPU: 12600K
GPU: EVGA 3080 FTW 3
Mobo: gigabyte aorus ultra z690i ddr4
Cooler: EVGA CLC 280
RAM: G skill trident z 3200 MHz cl 16
Storage: 1tb WD black sn 850
Case: SSUPD meshlicious

If anyone needs any more info please ask! Thanks in advance.

 

[Mo10Ko]

Hi all,

I just recently built an SFF build. I have the meshlicious case, which for those who know, it is a pain to plug in a regular display port or HDMI cable to the GPU. Basically, after fiddling around, I discovered that the GPU would not display to the monitor if I had the case standing up, and in this SFF case, that means the GPU is vertical with display port facing down. However, when I lay the case on its side, with GPU fans facing up, it works just fine. My conclusion is that I need an angled display port cable for this case. But it might not be as simple as that. When I start the PC standing up and then lay the computer over it still does not display. Only when I start the computer on its side does it actually display, meaning maybe the pressure on the display port cable is not the culprit?

Here are my specs:
CPU: 12600K
GPU: EVGA 3080 FTW 3
Mobo: gigabyte aorus ultra z690i ddr4
Cooler: EVGA CLC 280
RAM: G skill trident z 3200 MHz cl 16
Storage: 1tb WD black sn 850
Case: SSUPD meshlicious

If anyone needs any more info please ask. Thanks in advance.

 

[sizzling]

First thought is a bad motherboard socket or riser cable. I would try reseating them.

 

[Mo10Ko]

First thought is a bad motherboard socket or riser cable. I would try reseating them.

I have reseated the GPU and the riser cable and it's the same problem. Sometimes, I will get a BIOS screen but then the signal cuts out. Also, I thought a bad motherboard socket means it would not display at all, but mine does sometimes.

 

[sizzling]

I have reseated the GPU and the riser cable and it's the same problem. Sometimes, I will get a BIOS screen but then the signal cuts out. Also, I thought a bad motherboard socket means it would not display at all, but mine does sometimes.

Highly speculative but I was thinking a loose socket or pin that only makes full contact when pressure is applied in a certain direction. It is an odd problem.

 

[Mo10Ko]

Highly speculative but I was thinking a loose socket or pin that only makes full contact when pressure is applied in a certain direction. It is an odd problem.

I'm not very knowledgeable in electrical engineering but is it possible that the GPU contacting the metal case is doing anything?

 

[RodroX]

Perhaps the GPU is too heavy for how the riser cable connects to it, to the case, and to the motherboard. GPU sagging + riser cable can cause issues.

Ive seen a few videos about the case saying that depending on your hardware setup the riser cable may end in an awkward angle, and/or to streched for it to making good contact.

You have a igpu on that 12600K, Im guessing if you remove the GPU (display into the motherboard output) and try to turn the PC system will run every single time without issues, right? (no matter the Case is standing up or laying down on the desk)

 

[Mo10Ko]

Perhaps the GPU is too heavy for how the riser cable connects to it, to the case, and to the motherboard. GPU sagging + riser cable can cause issues.

Ive seen a few videos about the case saying that depending on your hardware setup the riser cable may end in an awkward angle, and/or to streched for it to making good contact.

You have a igpu on that 12600K, Im guessing if you remove the GPU (display into the motherboard output) and try to turn the PC system will run every single time without issues, right? (no matter the Case is standing up or laying down on the desk)

Yeah ur right on the igpu part. If I use integrated graphics all is good. So the problem is definitely the GPU position, and honestly it might be on me for trying to fit an atx psu in there. I really had to bend the riser cable, and even tho I managed to get it in and secure it, maybe something is still going wrong. I still am not sure about the screen turns off part tho, because I'm assuming that if I start the computer straight up and then lay it down, that the display should work right?

 

[RodroX]

Yeah ur right on the igpu part. If I use integrated graphics all is good. So the problem is definitely the GPU position, and honestly it might be on me for trying to fit an atx psu in there. I really had to bend the riser cable, and even tho I managed to get it in and secure it, maybe something is still going wrong. I still am not sure about the screen turns off part tho, because I'm assuming that if I start the computer straight up and then lay it down, that the display should work right?

No, it may or may not work, specially if theres a physical connection issue.

This is something that can even happend on your "normal" case to. Sometimes you think you inserted the GPU, RAM and CPU right, you hit the power button and nothing happend.

-----------------------------------------

Another thing you can try, which I guess it will be a pain in the !"#$$, is to remove the "large" PSU, and build the system with it outside the case.

 

[Mo10Ko]

No, it may or may not work, specially if theres a physical connection issue.

This is something that can even happend on your "normal" case to. Sometimes you think you inserted the GPU, RAM and CPU right, you hit the power button and nothing happend.

-----------------------------------------

Another thing you can try, which I guess it will be a pain in the !"#$$, is to remove the "large" PSU, and build the system with it outside the case.

I have considered rebuilding, but that will be last resort. Thanks for the help anyways, I will try to have something hold the GPU up and see if sagging really is the problem. Otherwise, some faulty connection might also be the culprit.

 

[RodroX]

I have considered rebuilding, but that will be last resort. Thanks for the help anyways, I will try to have something hold the GPU up and see if sagging really is the problem. Otherwise, some faulty connection might also be the culprit.

Sagging, on such a "crowded environment" (inside such a tinny case) can cause that faulty connection.

 

[Karadjgne]

It's stress. mITX requires careful planning for everything, especially cable routing and cables do Not like hard bends. It puts stress on the connections. If you look at how the riser connects its just 2 small plated spring clips that open up when the golden finger of the riser pushes them apart. They are very thin, have to be with as tight as the gpu packs in the fingers. All it takes is 1 pin to be slightly off-angle and no output.

Stressing the socket can also have unforseen issues it puts stress on the solder-trace joint and can break it, leading to a non-contact situation.

It's a pc. If you have to force anything, it's not quite right. I'd take a good long look at that riser route and see if it can be reconfigured slightly to take stress off it, reroute psu cables slightly if putting pressure on the cable etc.

In my pc I have clearances of 1-2mm in several places with fittings, requiring exacting angles and bends, it took the better part of a week just to run the psu cables so they didn't hit fans etc.

 

[Wolfshadw]

Any additional responses can be added here:

[SOLVED] - Is this what is causing the problems?

Hi all, I just built a SFF PC, but I have issues with monitor disconnecting randomly and losing signal when I am plugged into the GPU. Integrated graphics works just fine. Once the signal disconnects, it never comes back, and the only temp solution is to lay the case on its side. I saw...

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Wolfshadw
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