Can not Start Windows Process Activation Service

Got an error message after uninstall IIS7 on windows 2008 R2, and deleted the C:\inetpub folder.

"The Windows Process Activation Service service terminated with the following error:
The system cannot find the file specified."

 http://technet.microsoft.com/en-us/library/cc734935.aspx, which has, as the first option for solving this problem:

To resolve this issue, make sure that the appPools directory meets the following requirements:
- The directory must exist.
- The directory cannot be on a UNC path.
- The directory must be available to WAS and should have the following permissions:
* SYSTEM: Full Access
* Administrators: Full Access
* IIS_IUSRS: Read