So I just bought a used EVGA 980 FTW card everything works perfectly except the fans. As soon as I plugged the card in I realised that there might be a problem because only one of the two fans spun up. The fan that spins up stays relatively quiet until I launch a game at which point it becomes very loud. I have installed the newest drivers, installed the Precision X software, and had a look at the connection between the fans and the card itself and still no luck. On the Precision X software there is the option to change the fan speed, this has no effect and it thinks that the fan is spinning at 0RPM. Anyone got any ideas? 
Thanks, Akilax

Where would I be able to get hold of replacement fans, and would it be possible to purchase an entire new cooler for the card? 
Thanks, Akilax

Another thing, would it be possible to remove the fan and test it on its own just to see if it works?
Thanks, Akilax.

For the need to get the help for the motherboard fan problem that you must know some of the following techniques by which you can maintain the total knowledge from the  for the knowledge.

Isnt there a mini-fan-to-2-pin(or 3 pin) connector available to buy to test with?
I know I used to have one back in the day, but that was long ago.
It went from the fans little 2 or 3 pin connector on the video card to a regular 3/4 pin connector, or a 4-pin Molex connector. You had to disconnect the fans from the video card though to use it, and I dont know if these new video cards will allow that or not, but its a cheap option.
That way if the fans are good you can use that to power the fans if they are still good.

bcavnaugh
 JKtech 4 Pin Mini GPU to 4 Pin Fan Adapter  $9.99 I use them on my Non-Windows OS to Manage Fans.

Nice, thats what I used to have, except it was a 3 pin (OLD lol), and also had another connector on it to actually give a signal to the card that the fans were powered on, so there was that mini thing in the middle of that cable you posted. You could hook it up to the video card to give a positive 'fan spinning' to the card itself.
Like I said , long ago, dont know if they still have them, but nice find if the card works w/o it in windows.