I get this message too, even though my system is not even SLI capable. Yes, it is an annoyance, but I wouldn't blame it on killing your system.
If a driver causes a problem, Windows XP has driver rollback that you can use to "rollback" (clever huh?) a driver to a previous version. Boot to safe mode, open device manager, then the properties of the video card, and click on "Roll Back Driver" on the Driver tab.
Don't hate the player, hate the game.