been there, u gotta uninstall the onboard drivers, happened 2 me while installing my GeForce mx4000. the DELL title comes up, then the windows logo, then goes black.
gotta install the new drivers and uninstall the onboard drivers with yer monitor hooked up 2 onboard.
i cant find where to shut off the onboard mut i trust its not there, so its not working. i still leave AGP arpature on 2 give a extra boost.
It wasn't easy. Bit I think I got it working. Also had to set the display to which card I was using in the Display properties. I'd like to flip dell the bird for screwing up something so simple as to add a switch to turn off an onboard chip. all the other on-board chips were on there. why make things so difficult for us all.