Alien M17x Video Drivers

I am running an Alien M17x with dual Geforce-GTX-260M video cards.  I am operating on the windows 7 home premium 64 bit operating system.  I have been having an issue where the system seems to randomly switch drivers to a Geforce-9400M-G video driver.  I do not have this video card in my system.  The system stops using my dual video cards making it impossible to play any high end video or video games.  When I try to reinstall the proper drivers it runs through the set up fine but the drivers do not get changed.  If I try to remove the 9400M drivers and reload the proper drivers it works for a short period and then reverts to the 9400M.  I have used Driver Sweeper and get the same result.  I have scrubbed my system with both the Alien Respawn and with the factory recovery discs and the problem persists.  The Dell Support Desk seems to be stumped with this.

Has anyone else experienced a similar issue?  If so how do I fix it?

Please help!