I was was able to get my hands on a acer 3300 for free from work, I found the factory fan installed to be noisy so I bought a Siverstone NT07 pro fan which I was going to swap it with. I tried to so do but It ended up being that the fan was to big for the bracket so I put the old fan back in the pc. The problem I am having is the led lights arent flashing, usb ports don't work and their is no video signal on my monitor. Otherwise is seems to post my pci wireless card has a green light, the fan is running as well as the hard drive and dvd drive. Thanks in advance.