I’m having a problem with a noisy fan in my late 2009 27” iMac (iMac10,1 - OS X 10.11.5). I’ve had my malfunctioning Seagate HDD replaced with a WD Blue 1TB hard drive from a local computer store. After 10 or 15 minutes the hard drive fan is very loud and I believe it’s spinning at maximum speed but the 2 other fans inside the iMac seem to be running fine. I’ve reset the SMC but that doesn’t solve the problem. I can’t send it to a Mac Store because according to the Genius Bar representative my iMac model is considered “vintage” and they won’t repair it. Before the hard drive crash I’ve been using smcFanControl and running the fans about 500 rpm faster than normal but now it doesn’t control the HDD fan (although it can control the ODD and CPU fans). Will this damage my computer in the long run?