I was watching TV last night on one of my media extenders when it started to freeze. I went and checked my HTPC server and I heard a terrible whining noise, so I opened the case and the GPU fan on my 8400GS was screaming. PC was locked up and I had to shutdown via the power button. Where can I find a replacement fan in a hurry (brick and mortar) or should I just swap the GPU for a new one? Thank you.