This file usually appears on the CD-ROM of the device that can be connected to the computer through USB port, which is the most suitable driver. Under normal circumstances, the system will automatically update this file after connecting the device, and sometimes it will be invalid for unknown reasons. At the same time, it will prompt "This device cannot be enabled" no matter how to reinstall the driver. The solution is to copy ntmap.sys, ntmaphlp.pdr and usbstor.sys to the folder C: \ Windows \ System32 \ Drivers (with hidden attribute 0), and then pull out the device and insert it again. Publisher: Microsoft Corporation

Install a usb driver consistent with the system, regardless of digital signature!