I'm looking to upgrade the 3-pin front case fan on my Optiplex 3010 to something quieter, but the new fan will not spin up, regardless of which header I connect it to. The Dell fan is a standard molex 2510, NOT the flat latch connector. I've seen @speedstep 's posts about Dell using proprietary wiring on their fans, but that does not seem to be the case here.

Both fans are, from left to right, yellow/red/black.

Dell Fan:
Sunon EE80201S1-0000-G99
DC12V 1.56W 130mA
RPMs ???

Noctua Fan:
NF-R8 redux-1800
DC12V 1.32W 110mA
RPMs 1800

The only thing I can figure is that the BIOS is doing a check on the fan and not letting it spin up. I tried swapping tach and 12v on the Noctua as @speedstep suggests, but still nothing. I've verified that the existing and new fan as well as the onboard fan controller are functioning properly. Any ideas?