SQL Server 2008 Installation error for Reporting Services

If you get the following error while installing SQL Server 2008 "The Reporting Services catalog database file exists. Select a Reporting Services files-only mode installation.", please follow the link on Microsoft Support page. http://support.microsoft.com/kb/956095

To resolve this issue, move, rename, or delete the existing Report Server databases. Or, use a different instance name.

SQL Server 2008 Installation error for "Restart failed"

While trying to install SQL Server 2008 the installation may not proceed showing that Restart has failed. Even though you restart your computer it may show you the same message.

Check your system's pending file rename operations registry key. It should be cleared after you reboot your system. If not, something must be wrong.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations