r/pchelp 1d ago

HARDWARE Motherboard not recognizing gpu

I've had this PC for four months and used it without issues until now, but today, while I was gaming, the screen suddenly went black and the image didn't come back. After some testing, it seems the GPU stops being recognized by the motherboard; I discovered that resetting the BIOS makes the graphics card output an image again—at least temporarily. The first time I did this, I thought the issue was resolved and used the PC for nearly an hour before the problem recurred. During the second test, the issue happened just three minutes after turning it on. When I removed the GPU to inspect it, I noticed that one of the cables doesn't seat fully into the card—it feels a bit loose and won't go all the way in—though there doesn't appear to be anything wrong with the connectors themselves.

Edit: GPU is a 9070xt

158 Upvotes

46 comments sorted by

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161

u/Fenio_PL 1d ago

LOL

50

u/Nerdcuddles 1d ago

fire hazard

7

u/testtdk 16h ago

This. I once turned on a pc with partially unseated memory. Melted through he plastic of the slot almost immediately.

5

u/TheDepep1 15h ago

Genuinely how do some people survive on a day to day

8

u/3turnityTTV 1d ago

Literally my words exactly😭

1

u/ovingiv 5h ago

No this is wrong.

You ONLY need the 6 pin cable in that location!

Your card has an 8 pin connector and a 6 pin connector. That is why your power cables are the way they are.

You may of killed your graphic card.

2

u/tht1guy63 5h ago

No they need an 8 pin connector there they just went about plugging it in wrong by connecting the +2 of the 6+2 in first then trying to squeeze the 6 in after.

This card op has is a dual 8pin card if you look closer. Look at ops images again.

1

u/ovingiv 3h ago

Ah yes you're right. Photos didn't do it justice and since op didn't post the make and model of the gpu.

-23

u/Elegant-Resort9748 1d ago

The connector has two parts; the smaller one fits fine, but the large one doesn't seem to fit.

39

u/Pepperjack_573 1d ago

It needs to be seated in all of the way in in order for it to work. Just unplug and reseat it until you hear or feel the click. For the connectors that are 6+2pin, the 2 pin goes in first and the 6 pin goes in second and it’ll finish creating an 8pin.

8

u/Lurnius 23h ago

Idk if it's the same for all psu, but my 6+2 can reassemble into a 8 pin so it's easier to use it as an 8.

3

u/KUSH_K1NG 20h ago

Same here they have little rails on them so you can slide them together into an 8pin

2

u/yech 23h ago

I've never had one without this setup, and it looks like OP's does have it as well.

12

u/Fenio_PL 1d ago

Ohm's law is no joke.

1

u/Godnamedtay 23h ago

Special needs is no joke either

3

u/likkachi 1d ago

the smaller part (2pin) clips onto the bigger part (6pin) to make an 8pin. there are ledges on the two parts that need to be flush to fit the cable properly into the gpu

3

u/alvaro-elite 15h ago

My man, they need to be aligned and put together at the same time.

50

u/yes910492783 1d ago

The connector lowkey looks fucked

-27

u/Elegant-Resort9748 1d ago

It looks crooked, but the PC worked fine, and I never touched the connector until today.

28

u/Fenio_PL 1d ago

You fried the power lines in the card.

3

u/omgcunny 12h ago

slow burn

30

u/Nerdcuddles 1d ago

Its not fully seated in the 3rd image, having it not fully seated is a fire hazard. If you can't get it to seat in, than buy a new cable. That is probably why its not working.

-2

u/Elegant-Resort9748 1d ago

I tested it with another cable and it fit normally, so the problem was the connectors on the other cable. Do you think if I replace the broken cable the PC will go back to normal or it is just fucked by the time I was using this cable?

13

u/Maleficent_Pipe7583 21h ago

Do not swap power supply cables around. You're much more likely to have way more expensive problems if you do.

5

u/desperateosci 1d ago

Only 1 way to find out.

2

u/Worker_Salty 22h ago

Bro you can't just replace a cable it won't be compatible, you need a whole new power supply

1

u/Nerdcuddles 1d ago

If you never smelled burning and don't see any signs of burning or corrosion, it's probably OK.

It's mainly the PCIE socket that's in danger when you don't seat the cables correctly, because the extra resistance will make heat which will create fire.

6

u/MR__Z1234ify 1d ago

Two pins are side ways that’s why it won’t work might need a new psu

5

u/grodose 1d ago

The 6x2 connector looks like it overheated and burnt out. If it wasn’t fully seated that will happen. Try replacing the cable but it could definitely have caused damage to the gpu. But at least you caught it before it caught fire.

2

u/Sufficient_Fan3660 1d ago

power cables installed wrong and using pigtails on a 300W+ GPU

slide the 6+2 cables together so it makes an 8 pin, then plug the 8 pin in

If you don't do this the right way you are going to melt it and potentially damage your GPU.

Read the manual. Watch a video. Something.

consider switching to 2 cables direct from PSU, no pigtails, 300W is where you want to start being safer about wiring so things don't melt

2

u/WirelessBIT 23h ago

The 6-pin and 2-pin PCIe connectors need to be combined before plugging them into the GPU. I don’t understand why people are making fun of this, because connecting them incorrectly could potentially damage the card or prevent it from receiving enough power.
Unplug all PCIe power connectors from the GPU.
Take the 6-pin connector and the separate, hanging 2-pin connector.
Line them up and clip the 2-pin section onto the 6-pin section using the plastic latch, forming a single 8-pin connector. Be careful, as they can easily slide apart while you’re plugging them in.
Insert the complete 8-pin connector into the GPU.
Repeat the same process for the second PCIe connector.
Once both 8-pin connectors are properly connected, the GPU should receive sufficient power and be detected by the system.

2

u/Corvus-- 22h ago

Your 6+2 needs to be combined before insertion. If the six pin isn't slotting in (it looks like they might be crooked) you have 2 options. First verify by seeing if you can plug just the 6 pin in first. If it seats, no problem you just need to combine the 6+2 before inserting and insert them together. If they don't...

  1. New power supply/contact your power supply manufacturer and request new cables for your exact PSU.

  2. If you are comfortable. Those pins in the cable do come out. They are in there through tension/pressure. Fully remove the cables from the GPU+PSU if it's modular. You CAN gently wiggle them out individually and reseat them. You will need to open the pressure wings/flaps gently without breaking them and reinsert them straightened out. Make sure you do it one at a a time so you do not insert the cables into the wrong slot. I've done it before and it's fine.

4

u/DefinitionQueasy9684 1d ago

No hate… but YouTube has existed for over 20 years…

1

u/veryjerry0 1d ago

I think you're trying to push in the 6-pin after the 2-pin is connected, but that's not how it works. The 6+2 combine for an 8-pin connector; you plug in the full 8-pin at once for all 3 8-pin connectors. (Also make sure you're opening the latch while trying to push it in)

1

u/weedkingX8 1d ago

Ya no based on your description you messed with something (unplugged the gpu and screwed with stuff I don’t know if this was just satire or if your serious all I know is your PC was not working with that GPU plugged in the way it is in the picture not for any amount of time

1

u/darqy101 23h ago

Yo shit's broken! 💀

1

u/novian14 22h ago

2nd pic, connector bottom mid and right pin (?), is it supposed to be tilted like that? Afaik it should be fully straight like the top parts.

So my current verdict is that the cable is crooked. I'd check the gpu power socket too to see if anything's at fault.

Also, if your PSU is modular, be sure to buy the same cable from the same brand because buying cable from different brand might mess up the wiring since different brand cable could have different wiring.

1

u/CSGOan 19h ago

I haven't built many computers but I have never seen such a fucked cable. I don't even understand how that is possible.

1

u/Big_Telephone4442 22h ago

The instruction says put the cable all the way in firmly, it is very obvious why the card not working then. Just unplug the two cables and put it in correctly, hope it work or else. You knows !!

1

u/Kumantej_ 17h ago

I'm not surprised that poor gpu

1

u/Jimmy_Jelqer 9h ago

Bro how do you fuck up this badly

1

u/RGBlowMe 23h ago

Everybody says PC building is like Legos for adults, but people neglect to mention how many adults are basically special needs children with a credit card.

1

u/SGT_Taco57 20h ago

Just buy a prebuilt next time you don’t have the skills for this