$ express -V bash: express: command not found

操作系统是windows 7，在windows10下直接就通了，现在就是不行，请帮我看看是怎么解决？目前网络上没有其他的解决方式？
环境如下：

git2.3.7 windows 7 旗舰版
Administrator@MS-20181112ZKFZ MINGW64 /d/nodejs/project
$ node -v
v13.6.0

Administrator@MS-20181112ZKFZ MINGW64 /d/nodejs/project
$ npm -v
6.13.4

Administrator@MS-20181112ZKFZ MINGW64 /d/nodejs/project
$ npm install express-generator -g
npm WARN deprecated mkdirp@0.5.1: Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)
D:\nodejs\node_global\express -> D:\nodejs\node_global\node_modules\express-generator\bin\express-cli.js

• express-generator@4.16.1
  added 10 packages from 13 contributors in 2.321s

Administrator@MS-20181112ZKFZ MINGW64 /d/nodejs/project
$ npm install express -g

• express@4.18.1
  added 57 packages from 42 contributors in 5.061s

Administrator@MS-20181112ZKFZ MINGW64 /d/nodejs/project
$ express -V
bash: express: command not found

Administrator@MS-20181112ZKFZ MINGW64 /d/nodejs/project

express -v小写试试