Well my gtx 560ti that i had bought back in august is having some trouble. The heat sink fan has stopped spinning completely when my computer starts up and when i am playing games. Hence thats why i cant play games now. i could with my onboard graphics but we ran into a problem with windows not recognizing the change. So i found this problem out when i would start a game, and within minutes of playing say Red Orchestra 2 the screen would go black and buzzing would come from the speakers. I took the side panel off my computer and inspected the card. it had spelt like it was roasting the whole time the game was playing. but im sure the card is safe and perfectly alright to use because i had taken of the plastic cover off and found no damage or scorched parts on the heat sink or the card. i cant seem to find a fan that has the right size and screw hole arrangements to replace the one on my card. Also what could be the problem with the fan? and is there any way i can further fix the fan? there is no blockage or clogage of the fan it. spins relatively smooth and freely. and the card itself is clear of dust.
I don't know what cooler design you have, but most of the time you'd be able to see the lead and header running to the PCB, check that it is in securely.
If it doesn't work, you should be able to RMA it if you only bought it in August.
The fan is just screwed right on top of heat sink and powered by a four pin connector near the edge of the card. its a card by evga and its the 448 core version. if i was going to get a replacement would the new fan connector have to be four pin as well or would i need an adapter? well if i could get it to fit on the connector. well besides that question its a simply little 80mm fan. how could i get inside it?