This happens because the Windows installation media (your USB stick or DVD) doesn't have the specific IRST driver needed to interface with your N20C5's Intel storage controller.
Disable Secure Boot temporarily in BIOS (Boot tab > Secure Boot > Disabled). Also ensure you extracted all files; the .cat (catalog) file must be present for signature verification. acer n20c5 storage driver
Frustration bloomed. She tried every subfolder: f6flpy-x64 , Driver , Production . Nothing. The driver didn’t contain the right .inf file for her specific NVMe controller ID. This happens because the Windows installation media (your