After a month of owning my geforce gt 620 i just realized the fan isnt working. the card was a pain to get in my tiny dell optiplex 755 in the first place. so i took out the harddrive to get to the video card and shaved off a bit of plastic so i wouldn't have to take out the hard drive again. before putting in the hard drive i noticed that the card will not slide completely down because of two cylindrical nodes on the motherboard hitting the heat sink. i bent the heatsink to get a few more millimeters of space. could this be the reason for my fan not working? would i be able to wiggle these nodes to the side a bit? the card is slanted as you can see. Also, according to gpu-z my fan is running at 35%.