Question PCIE Issue Help

Sep 24, 2020
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Having an issue and I’ve searched and searched and can’t find anyone with the same exact issue that’s helped much. This is my first PC build so I am lost in what is wrong. I am an electrical engineer so don’t be worried about getting technical. Any help is appreciated.

Here’s the specs
B450 Tomahawk Max
16Gb DDR4 3600 RAM
Rzyen 5 3600
XFX Raw II 5700XT GPU

Here’s the issue.
Everything went smooth building it. Worked great minus some temp issues that was resolved with undervolting the CPU slightly. About a month or two in I went to turn on and no signal from the GPU. Tried a lot of thing I seen on other forums such as clearing the CMOS, removing a RAM stick etc. I moved the GPU to another PCIE slot and it works so the GPU seems fine. So I’m down to the mother board having a bad PCIE slot or something wrong with the CPU seeings how the PCIE slot not working is the one tied to the CPU. I don’t have spares laying around so I haven’t been able to swap and check so I’m wondering if there is any other test I can do to narrow it down? Other than that I guess it’s guess what part to replace and see how it goes. The VGA Light on the motherboard comes on during boot and then stays off which I find odd but I also tried to boot without the gpu installed and it doesn’t stay on either so I’m assuming that’s no help. Thanks for any advice!
 
I think more than likely the problem would lie with the motherboard than the CPU as CPUs are generally tougher......but have you tried the first slot again? Many times I have come across a situation where the card just needed to be reseated.

I would also inspect the slots and the card for any debris or anything odd.
 
Sep 24, 2020
2
0
10
0
I think more than likely the problem would lie with the motherboard than the CPU as CPUs are generally tougher......but have you tried the first slot again? Many times I have come across a situation where the card just needed to be reseated.

I would also inspect the slots and the card for any debris or anything odd.
Yeah I have reseated it a couple times. Sometimes the monitor acts like it sees a signal and comes on but will shortly go to no signal. I’ve thought about doing a complete disassemble/reassemble but haven’t yet.
 
Yeah I have reseated it a couple times. Sometimes the monitor acts like it sees a signal and comes on but will shortly go to no signal. I’ve thought about doing a complete disassemble/reassemble but haven’t yet.
I don't know if I would go as far as that as it really seems like you have it narrowed down to the slot.
I can't think of much else it could be if it works in one slot and not the other.
I might just RMA the MB.
 

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