This step is to get the user profile deleted. In the next step you need to delete the user profile from the C drive.
How do I remove a domain user from my computer?
Right Click “My computer” and select Properties, go to the Advanced tab, and then click Settings, and then go to User Profiles, and click on the “My user profile” name. Click the “Change” button to the right of the User Account Control (UAC) security notification, then click the “Delete” icon.
How do I remove a user from Active Directory?
In order to delete the Active directory account; you should open the Active Directory Users and Computers MMC. Right click the user object and select “Delete” from the context menu. Then a confirmation box will appear which asks you to confirm if you really want to delete this object. Click “Yes” on that window will be deleted the current active directory domain user account.