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  1. #1
    New ROGer Array
    Join Date
    Apr 2019

    Question Asus X470-F Mobo with M.2 SSD and SLI issue

    Hey All,

    I’m having an issue regarding my new M.2 SSD and RTX graphics cards that I’m hoping someone can help me out with. The issue arises when I install my M.2 NVMe. Before installing, my 2 RTX’s with NVLink worked perfectly fine. After installing the M.2, my computer would not boot into windows. I would get the windows icon when booting up and the PC would freeze on that screen. So I booted into safe mode, went into my device manager and uninstalled my Nvidia RTX Cards. I then restarted my PC and it booted successfully with the M.2 SSD being recognized by windows. I installed the latest Nvidia Driver and the RTX cards show up in my device manager without any issue. However, whenever I try to access the Nvidia Control Panel, an error message pops up stating “Your display is not attached to a nvidia gpu”. I also cannot change my resolution to anything above 1920x1080 (I have a 3440x1440 screen). I made sure that my monitor is plugged into one of my cards. I also went onto GPU-Z and it shows that both NVidia cards are running in PCIe 3.0x8, which is normal.

    I am using an Asus X470-F motherboard. In the user manual it states that there are 2 M.2 slots with the following features:

    For AMD Ryzen 2 Generation with Radeon Vega Graphics, the M.2_1 socket supports PCIe3.0 x4 mode and SATA mode M Key design and type 2242/2260/2280/22110 storage devices.

    The M.2_2 socket supports PCIe 3.0x2 mode and SATA mode M Key design and type 2242/2260/2280 storage devices.

    The M.2_2 socket shares PCIe clock with PCIe x1_1. When PCIe x1_1 or PCIe x1_3 is occupied, the M.2_2 socket can only support SATA mode.

    I bought the “Western Digital WD BLACK SN750 1TB NVMe Internal Gaming SSD - Gen3 PCIe, M.2 2280, 3D NAND - WDS100T3X0C”

    Currently, the M.2 SSD is installed in the M.2_1 socket. Could the issue be that I am running my two Nvidia RTX cards in SLI in PCIe3.0 x8 mode, while trying to use the M.2_1 socket that runs in PCIe3.0 x4 mode? The motherboard only has two PCIe 3.0 expansion slots (which are both occupied by the GPU’s). And I don’t want to run the SSD in SATA mode because then I won’t be using the NVMe device to its fullest. I do have a Wifi card plugged into the PCIe x1_3 slot, however, this should only affect the SSD if it is plugged into socket M.2_2, which it is not.

    If you have any suggestions, I’m all ears! Thanks

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