.sys is the driver file. It must be a driver issue. It may be a virus replacement. You can go online and download a file suitable for your system. The addition is not caused by a virus. After searching on Baidu, I saw that this type of error was mainly caused by network cache leaks. Go check the properties of the network card and compare them with mine to see if there are any more? . Um, my system is special. . . . Download the replacement file first. If it still doesn't work, take a screenshot of the network card properties and see...