Power to the fan is no indicator that the card is functioning. My final check would be to deliberately disable the integrated video completely in the BIOS (to ensure that video isn't somehow being forced to the integrated chip only), make sure that the monitor and cable used for a successful test on the integrated video are what you use for one last test of the video card.
If you get no display, reset the BIOS on the motherboard (since at that point you will have no way to see the screen at all) and live with the integrated chip until you can buy a new card.
If you have custom BIOS settings that would be inconvenient to remember, be sure to write them down first.
workaround by
http://superuser.com/a/160677