I am attempting to get Windows 10's NVMe and xHCI drivers "working" on Windows 7. Why? Because the KB for Windows 7's NVMe drivers apparently is an incomplete implementation and writes directly to the NAND, and there are limited sets of xHCI drivers available for 7 (so newer Intel chipsets, like Cannonlake, do not have USB drivers working at all.) Windows 10 provides a generic set of NVMe and xHCI drivers which provide compatible interfaces for all compliant devices, they are named "stornvme.inf" and "stornvme.sys" for the NVMe drivers, as well as "usbxhci.inf" and "USBXHCI.SYS" for the xHCI drivers (from LTSB 2015.) However, these are "in box" drivers, and thus the .inf files do not specify a .cat to go with them. As a result, these are not signed by anyone and will not install regardless of any setting. No modifications to BCDEdit, nor the Group Policy works. Without resorting to the fairly complex process of signing these drivers myself, and somehow trying to import the certificate into boot.wim/install.wim, is there any other circumvent this idiotic Code 52 driver "not signed" enforcement?