You can do the following to at least get you fan working:
Cut the red and the black wire from the connector. (As closest to the connector as possible beceause they have to be long enough to reach the back of installed drives!)
Strip the wires for about one inch and twist the copper strands so it resebles a solid core.
Take a connector from a HDD or a CD-Rom. (NOT an unused connector!)
Fold the uninsulated wires into the next pins: (From the side who is going into the drive)
Red from the fan to the Yellow of the connector. (+12V)
Black from the fan to the Black from the connector. (Common, Does not care wich black, they are in Parrallel)
reconnect this gently back into the drive.
(There meight be some pressure needed!)
If successful, the fan would come up as the drive would.
With this method, you have no control of the rotation speed, so switch that off in BIOS.
It did not happen to me when i replaced my 230 Watt for a 400 Watt, but i had no external PSU fan connector from the PSU.