SCCM Client uninstallation - Manual method

It may occasionally be necessary to remove the System Center Configuration Manager client. We can uninstall an SCCM client on machine by running "ccmsetup.exe /uninstall". 

Some unusual times when the command line doesn’t work, here is a list of things to check and remove to manually clean-up all the traces of the client so as to try a fresh install. 

1. SMS Agent Host Service - (services.msc)
2. CCMSetup service - (services.msc)
3. \windows\ccm directory - (folder path)
4. \windows\ccmsetup directory - (folder path)
5. \windows\ccmcache directory - (folder path)
6. \windows\smscfg.ini - (file path)
7. \windows\sms*.mif - (file path..if present)
8. HKLM\software\Microsoft\ccm - (registry key)
9. HKLM\software\Microsoft\CCMSETUP - (registry key)
10. HKLM\software\Microsoft\SMS - (registry key)

Ref: http://blogs.technet.com/b/michaelgriswold/archive/2013/01/02/manual-removal-of-the-sccm-client.aspx