If you  have tried to install SQL Server 2008  and cannot install, because of  the errormessage the prerequistite “Restart the computer is required”.

But every time you restart  computer and try to execute the setup of SQL Server 2008, you get the same message

Then you have change a registry entry in computer

• Open Regedit
• Find the key “HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSession Manager”
• Rename the “PendingFileRenameOperations” value to “PendingFileRenameOperations2”
• Try again

This will solve the Restart Problem