How to delete cygwin folder

The other day I spent sold 2 hours trying to delete the annoying cygwin folder for installing a cleaner version. :p

every time I deleted it gave me access denied error until I used calcs in command prompt to reset the permissions. (Equivalent to chmod *.* 777)

CACLS c:\cygwin /E /T /C /G "wahmed":F

where wahmed is my user account in windows. After that just right clicked the folder and poof, deleted. Phew!

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I suppose before you get to the above point, you already have done this small bit

Complete Method
First kill the cygwin services, by either going to Start>RUN>services.msc or type these lines in cmd prompt/Run
1 - cygrunsrv -E sshd
2 - cygrunsrv -R sshd

3 - Delete the folder c:\cygwin and all its sub-folders (if it doesn’t get deleted follow the above guide)

4 - Remove the Environment Variable CYGWIN (by right clicking My Computer->Properties->Advance-Environmental Variables) edit the Environment path accordingly

5 - Start>Run>regedit and delete these two registry trees
"HKEY_CURRENT_USER_Software_Cygnus Solutions"
"HKEY_LOCAL_MACHINE_Software_Cygnus Solutions"

6 - Go to Control Panel>Category View>Performance and Maintenance>Administrative Tools, Computer Management.
or click Start>Run>compmgmt.msc
delete the sshd user if it exists in the "System Tools" - "Local Users and Groups" - "Users" section.
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