Create the default/generic EPM Weblogic Admin Service on Windows 2003 and Windows 2008 servers usually on the first foundation node.

Create a text file in the location:
D:\Oracle\Middleware\user_projects\domains\EPMSystem\CreateAdminService.bat

Edit the text file, the contents should look like this:
Correct the paths and epm_admin password information

Run the batch file and it should create the service: beasvc EPMSystem_AdminServer

Check out the registry if any start-up parameters need checking like Xms and Xmx. Also additional startup logging can be enabled here, very handy for troubleshooting failing Weblogic Services, it takes a parameter like D:\WLAdminDebug.log , Remember to delete this entry once debugging the service.

HKLM\SYSTEM\CurrentControlSet\services\beasvc EPMSystem_AdminServer

To Delete the Service create a new batch file called: D:\Oracle\Middleware\user_projects\domains\EPMSystem\RemoveAdminService.bat
The file contents should look like this:
Once run the service should disappear from the list of Windows Services.