Very noisy HP DL380 G6

Hi All,

I have a question about a DL380 G6 Server that i Own.     I know that i am not suppost to run server 2012 R2 on it but it works.

BUT

I also placed a videocard in the PCI Express slot ( PCI-e X8) it is a nvidea Geforce GT 440.                                     the system does see the videocard and accepts the drivers BUT when i turn the server on i start to make a lot off noise.    a few of the fans seem to go grazy ,  is there any way to stop this ?

Ii need to work on that server because my other Work Computer is in repair and that takes a long time , otherwhgise i would not do such crazy things with a server.

Hope you can Help,

Paul