I have Windows 10.

Sometimes my computer boots up and recognizes the Samsung 970 EVO connected to the adapter in my pcie x4 slot and lets me use that disk as a storage disk.

Most of the time it does not recognize this disk and I do not have access to it in disk manager or device manager.

When I go into my BIOS, it does not list this disk drive anywhere that I can find it.

Do I need to mod my BIOS to support and recognize this drive? Or do I need specific drivers for it?

> If the OS has problems with the detection of the NVMe SSD, you may try to put the M.2>PCIe adapter into another PCIe slot.

So put my GPU in the PCIe x4 slot and the NVME SSD and adpater in my PCIe x16 slot?

Yes, that is what he meant. Sounds like you have a bad adapter maybe, since it should always show up. You may want to try another you can get them dirt cheap on amazon or ebay (less than $5), let me know if you need linked examples.

So I actually have tried two adapters so far:
1. RIITOP NVMe Adapter M.2 PCIe SSD to PCI-e x4/x8/x16 Converter Card
2. Vantec M.2 NVMe + M.2 SATA SSD PCIe x4 Adapter

Both had this problem in the same pcie slot. But I will try putting the RIITOP one in the other pcie slot to see if it works or not

EDIT by Fernando: Links to the vendor of the adapters removed (we don't like advertising)

Hi!

I have similar motherboard and NVME connected via PCI adapter, and I think I nailed this problem (I mean, not have resolution) disk is dissapearing after sleep. I think it is a motherboard problem, not a adapter or disk. I don't think we can fix it on bios level, maybe using main PCI lane for disk and secondary for GPU will fix it. I think I just will not using sleep function. But I'll glad to hear better solution.

Fernando, Lost_N_Bios I would like to thank you for help you give here, I already learned a lot about matching hardware form different timeframes from your kind answers on this forum, Regards!

Okay I swapped the pcie port for the gpu and adapter. It works now.

But the GPU is running at pcie x1? I know that the pcie x4 bus shares bandwidth with the pcie x1_2 and pcie x1_3 lanes but nothing is plugged into those. Maybe if I swap which pcie x1 lane my wifi adapter is plugged into I can keep the gpu in the x16 lane and put the nvme adapter in the x4 lane.

My GPU in the pcie x4 lane unfortunately blocks access to 3 sata ports

Okay. Switched them back and then tried putting my wifi adapter in a different lane: wifi didn't work but my nvme drive loaded...

Something is happening where the PCIe x16 and PCIe x1_1 are getting priority over the PCIe x4 slot. Could be my cpu is limited to a certain amount of pcie lanes? I have a i5-2500k. Maybe if I can force my gpu to run at pcie x8

So I will check this option myself then. If something new comes to my mind I will drop by.

Zitat von icecreamman im Beitrag #8

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Could be my cpu is limited to a certain amount of pcie lanes? I have a i5-2500k. Maybe if I can force my gpu to run at pcie x8

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@icecreamman - So, when the NVME does work in the X4 slot, did it show up as X1 too??
Maybe that slot may be going bad, due to the NVME issues you mentioned, and then GFX showing up as X1 there too during this test. Never mind, see below!

This explains the x1 at X4 slot issue, from your spec page >>
1 x PCI Express x16 slot, running at x16 (PCIEX16)
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
1 x PCI Express x16 slot, running at x4 (PCIEX4)
* The PCIEX4 slot shares bandwidth with the PCIEX1_2 and PCIEX1_3 slots. When the PCIEX1_2 slot or the PCIEX1_3 slot is populated, the PCIEX4 slot will operate at up to x1 mode.

x1 NVME speeds would be TERRIBLE, and likely would also cause all these issues due to not having enough bandwidth to run properly
So you just need to purchase a USB or PCI WIFI adapter instead, so you're not using that x1 slot -

@AdamRatai - Sleep issues can be any number of things, BIOS or drivers, or programs etc. Best to test on a clean install, no drivers or anything, to rule out drivers/programs.
Then if issue remains all you can do is try newer or older BIOS, and or report this issue to your motherboard manufacturer and hope they look into it and fix

Zitat von Lost_N_BIOS im Beitrag #11

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* The PCIEX4 slot shares bandwidth with the PCIEX1_2 and PCIEX1_3 slots. When the PCIEX1_2 slot or the PCIEX1_3 slot is populated, the PCIEX4 slot will operate at up to x1 mode.

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Yes, maybe the spec or manual is wrong, it wouldn't be the first time such has happened
Or, it may still just be the adapter? I use these $5 adapters, on several boards without any issues - https://www.amazon.com/gp/product/B07GPBBCGS
Maybe just get a USB WIFI adapter and then you don't have to fight this issue. NVME works properly with PCIE x1 WIFI adapter removed, correct?

You can see NVME lane width in slot by using CrystalDiskInfo - https://crystalmark.info/en/software/crystaldiskinfo/
Info will be as shown here once you select the NVME disk


@icecreamman
* Edit - Ahh! I see in reddit thread you are using the UEFI BIOS, and don't even have Ivy CPU! Even with IVY CPU all those BIOS are very buggy, so this may just be one of the bugs!!
Go back to old Award BIOS and then I bet all will be proper!! Never mind, sorry, I forgot this is not possible to then use NVME, unless you want to use one of the USB bootloader methods

YOu can try UA7 BIOS and see if it's any better, yes I know it's older, but worth trying in case there is bug in UA9 - https://www.mediafire.com/?url55y78e5tt0ny
Otherwise, your best option is to get USB WIFI card (May not help, if x1 issue is due to UEFI BIOS Bugs), or go back to award BIOS and use USB Bootloader method for NVME booting.

Zitat von Lost_N_BIOS im Beitrag #13

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@icecreamman
* Edit - Ahh! I see in reddit thread you are using the UEFI BIOS, and don't even have Ivy CPU! Even with IVY CPU all those BIOS are very buggy, so this may just be one of the bugs!!
Go back to old Award BIOS and then I bet all will be proper!! Never mind, sorry, I forgot this is not possible to then use NVME, unless you want to use one of the USB bootloader methods

YOu can try UA7 BIOS and see if it's any better, yes I know it's older, but worth trying in case there is bug in UA9 - https://www.mediafire.com/?url55y78e5tt0ny
Otherwise, your best option is to get USB WIFI card (May not help, if x1 issue is due to UEFI BIOS Bugs), or go back to award BIOS and use USB Bootloader method for NVME booting.

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Zitat

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go back to award BIOS and use USB Bootloader method for NVME booting.

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Not sure if I want to boot NVME so maybe just flashing this old BIOS will solve my issue. Either way, I do have an empty USB port on the back of my computer if I want to boot off the NVME.

I'm using latest award Bios for this Motherboard (next one is a UEFI Beta you are using, I suppose) And have this "sleepy PCI", so give an info about v7 and this issue, please. Still trying to use USB method, but my lack of focus bite me in the ass.
Edit: O course I have similar, not "this" motherboard, so scratch it.