“Restart Computer Fail” error occurs when we try to install SQL Server 2008 Developer Edition. Trying to install SQL Server 2008 Developer edition setup failed at the Setup Support Rules page on the Rule "Restart Computer" see figure 1. The following error message appear on screen: "Restart computer failed" see figure 2.
Error Reason: In general, a previous program installation created pending file operations on the installation machine.
Step 1: Open the registry. For open registry, press window key + R and type
Step 2: Type regedit and press enter button
Step 3: Now select HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager
Step 4: Double click "PendingFileRenameOperations"
Step 5: Delete all data from Value data textbox.
Step 6: Press OK and close the registry.Now try to run SQL Server 2008 setup again. I hope Restart computer failed error not come again.