Question GPU Won't work on top slot.

Jul 31, 2022
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For some reason on my new computer, the GPU will not work on the top PCIE slot. I have literally replaced/returned every single bit of hardware except for my SSD and I have no idea what the issue is. I have reinstalled windows multiple times and have ensured all my hardware works by testing it on other machines. I don't know what to do.

Please help!

Here are my specs:

MB - ASUS Prime B660-PLUS D4 LGA 1700
CPU - Intel i5 12600k
RAM - 16 gb of skill
GPU - RTX 2060
SSD - Samsung 980 evo m.2
PSU - EVGA SUpernova 750 GT
 

COLGeek

Cybernaut
Moderator
See page 55 of the BIOS manual:

https://dlcdnets.asus.com/pub/ASUS/mb/13MANUAL/PRIME_PROART_TUF_GAMING_Intel_600_Series_BIOS_EM_WEB_EN.pdf

What setting is your (in BIOS) PCIEX16_1 Link Speed set to?

Also, is your motherboard BIOS the most recent version?

 
Jul 31, 2022
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You mean the slot closest to the CPU, correct? Have you tried an alternate GPU in that slot?
Yes, I'm using the x16 slot is nearest to the CPU, and I'm using the most recent BIOS version from their website. The PCIE x16 link speed is set to auto. The GPU works in the second PCIE slot, I believe it's the x8 slot.
 
Jul 31, 2022
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At this point, I suspect a defective motherboard. It should be replaced under warranty.
I would assume so too, which is what I did. I have replaced the motherboard 3 times now with the same motherboard so unless im just really unlucky idk what is happening.
 
Jul 31, 2022
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Are you sure that the PCIe cable, from the PSU to the GPU, is connected properly? Have you tried both VGA labeled sockets on the GPU?
Yes, I've tried VGA 1 and VGA 2 on the power supply, I have also replaced the power supply. I don't have a pcie riser cable it's just plugged directly into the board slot.
 

COLGeek

Cybernaut
Moderator
Yes, I've tried VGA 1 and VGA 2 on the power supply, I have also replaced the power supply. I don't have a pcie riser cable it's just plugged directly into the board slot.
That is your problem. Those cables perform different functions.

You must have the PCIe (6+2 pins) cable going from your PSU directly to the GPU. There is a different cable (4+4 pins) that goes from the PSU to the motherboard, along with the 24-pin connector.
 
Jul 31, 2022
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That is your problem. Those cables perform different functions.

You must have the PCIe (6+2 pins) cable going from your PSU directly to the GPU. There is a different cable (4+4 pins) that goes from the PSU to the motherboard, along with the 24-pin connector.
I don't really understand, my GPU is fully plugged into the PSU, and the only labels for the female connectors coming out of the PSU are for the 24 pin MB, CPU 1 and 2, SATA, PERF, and VGA 1 and 2. I have the VGA power cable connected to VGA 1 and all the female pins on the GPU are plugged in.... it's a 6+2 pin connector
 

COLGeek

Cybernaut
Moderator
There should be two cables going from your PSU to the motherboard. One 24 pin connector and one 4+4 pin connector.

In addition, the 6+2 pin cable goes from the VGA1 or 2 socket on the PSU to the GPU.
 

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