Installed from mounted ISO w/Steam CD Key

[Skillers Inc]

I have a bad internet connection so I had a friend give me his .ISO's for the game. I bought a CD key on steam and after installing the game it blocks it from starting up because of some SecuROM thing. Is there a way I can get around this? I have a perfectly legal copy of the game so I don't understand why I am having this issue.

[TonyResta]

 

Known problems

SecuROM may not detect that the original game disc is in the drive. This can occur on virtually any configuration, and reinserting the disc or rebooting the computer usually resolves the problem.[8]

Under Windows Vista, SecuROM will prevent a game from running if explicit congestion notification is enabled in Vista's networking configuration.[9]

Software that can be used to bypass copy protection, such as disk drive emulators and debugging software, will block the launch of the game and generate a security module error.[8][10] Disabling such software usually fixes the issue, but in some cases uninstallation is required.[8]

SecuROM conflicts with other software, the best-known being SysInternals' Process Explorer (prior to version 11). Use of Process Explorer before an attempt to run the protected software would produce an error caused by a driver that was kept in memory after Process Explorer was closed. This is solved by either ensuring that Process Explorer is not running in the background when the game is launched, or updating Process Explorer.[8][11]

SecuROM has a hardware-level incompatibility with certain brands of optical drives. Workarounds exist.[8]

 

If none of those work then i don't know, not really sure how steam works since i have the physical version.