I built my first PC and am trying to install Windows 11, but the SSD does not appear on the screen where I select an installation drive. The SSD is installed in the motherboard's M2C_SB slot because the primary M.2 position and its heatsink interfere with installing my graphics card. I downloaded the motherboard drivers and copied them to a USB drive, but I'm not sure which drivers are needed or how to load them during Windows Setup. What should I change in the BIOS or installer so Windows can detect the drive?
3 Answers
Windows normally includes the basic chipset drivers, so this may not require manually adding general motherboard drivers. Check the BIOS for Intel RST, VMD, or a similar storage-controller setting. If it is enabled, try disabling it or switching the storage mode to standard AHCI. If the setting cannot be changed, download the correct storage or RST driver for the exact motherboard and load it with the “Load driver” option in Windows Setup.
You probably should not need to buy a smaller SSD just because it is in the chipset-connected slot. Check the motherboard manual for the exact M.2 slot and supported drive type, then confirm the drive appears in the BIOS. If it does, use the storage-controller driver from the board manufacturer’s support page—not every file in the downloaded driver package—when Windows Setup asks you to browse for a driver.
The M2C_SB slot is connected through the motherboard chipset rather than directly to the CPU, but that does not automatically make it unusable or require a special Windows image. First confirm in the BIOS that the SSD is detected there. If the BIOS cannot see it either, check the slot’s compatibility, reseat the drive, and verify that using that M.2 slot does not disable or share lanes with another connector. If the BIOS sees it but Windows Setup does not, the issue is more likely the storage mode or an installer driver.
The drive fits in that slot, but the M.2 heatsink in the other position physically blocks the graphics card. I’ll verify whether the BIOS detects the SSD before trying more drivers.
The bootable USB was created on a Windows computer, so I’ll check the BIOS for an RST or VMD setting first.