hello, from personal experience PNY is J.U.N.K. I tried them in the past and everytime it would just crap out and I have to take it back. It is not surprising 10 years later, they are still junk.
Fans are a tricky, if it feels like it wants to turn but can't. you will need to pop it off and clean the gook that builds up on either bearings or spin wheel. IF you don't want to do that, you can buy cooling kits for gpus.
I have a problem with antec 200mm fan on top of my case where ythe dust gets sucked right intot he mechanism. I have to pop the spindle out clean it, then lube the spindle and put it back in place.
Hopefully you can get it working, but if not , go with a more stable brand of nvdia card like EVGA , MSI , ASUS. PNY is just crap construction 50% of the time
Looking at the card, you will have to unscrew the metal cover.
Then peal up the pny sticker that is in the center of the fan.
You should see a washer or bolt , you will need to remove that, and then gently pull the fan blade off.
BE VERY CAREFUL and watch how everything pulls apart.
Clean the gook in there then use some silicon lubricant on the fingers to rub on the moving parts(bearings or spindle).
Put it all back together and see if cleaning it worked.
If that didn't work, you will need to buy a gpu kit like this one I linked http://www.newegg.com/Product/Produc...82E16835118037