Strange behaviour with new nVidia GTX 260
I just replaced my ATI 4870 with a GTX 260, and it appears I can't boot up with 2 screens anymore. Only one screen (the one connected via the 1st DVI connector) will switch on; when I enter Windows, I can then use my multimonitor set up as normal. Is this standard behaviour? I'm using 2 LCD monitors connected via DVI, and I never experienced this behaviour with my older nVidia card 6600GT or ATI 4870. With my 6600GT and ATI 4870, both screens would start up, and display the same image. Thanks.