I'm having some version issues with Angular, ng, etc. I'd like to start from the beginning and uninstall everything that has been installed and start over. I'm on Windows. 

I found some information here: 
<https://docs.npmjs.com/misc/removing-npm.html> 

I ran this from a cmd line and it didn't seem to do anything:
npm uninstall npm -g

I reran as admin and it deleted some of the things I installed but not everything. 

This is from cmd with out admin:

```
C:\>npm uninstall npm -g
up to date in 0.12s

C:\>ng version

     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/

Angular CLI: 9.1.1
Node: 12.16.2
OS: win32 x64

Angular: 9.1.1
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.901.1
@angular-devkit/build-angular     0.901.1
@angular-devkit/build-optimizer   0.901.1
@angular-devkit/build-webpack     0.901.1
@angular-devkit/core              9.1.1
@angular-devkit/schematics        9.1.1
@angular/cdk                      7.3.7
@angular/material                 7.3.7
@ngtools/webpack                  9.1.1
@schematics/angular               9.1.1
@schematics/update                0.901.1
rxjs                              6.5.5
typescript                        3.8.3
webpack                           4.42.0

```

This is what is left after running as admin:

```
c:\>ng version

     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/

Angular CLI: 9.1.1
Node: 12.16.2
OS: win32 x64

Angular:
...
Ivy Workspace:

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.901.1
@angular-devkit/core         9.1.1
@angular-devkit/schematics   9.1.1
@schematics/angular          9.1.1
@schematics/update           0.901.1
rxjs                         6.5.4

c:\>

```