flutter doctor doesn’t work on neither Command Prompt or PowerShell window?

to run flutter from the command prompt on your windows system it requires three things

1. path to the bin folder of downloaded flutter sdk
   I have downloaded and saved the sdk in my documents so for me path will be

C:\Users\mahesh_2\Documents\flutter_windows_v0.11.9-beta\flutter\bin

2. where.exe located at C:\Windows\System32

Note:you need to download git from here if you dont find path in step 3

3. git-cmd.exe located in C:\Program Files\Git\git-cmd.exe

so to simply add these three paths to your environment variables
go to system environment variables
with variable name as Path

and value as

C:\Windows\System32;C:\Program Files\Git\git-cmd.exe;C:\Users\mahesh_2\Documents\flutter_windows_v0.11.9-beta\flutter\bin

restart the command prompt and try running flutter and Voila! you should get something like this