Ok, my system is down atm waiting on a new motherboard. But when I had it up and running, every time my dog's tail wacked the side of my case I would hear clicking sounds. Da Dog is a Lab (known for thier strong tails), so wondering what clicks more when it's in trouble, the PSU or HD. Both of which still worked at the time I powered down waiting for my Mobo, and it only happened with my dog wacked it with her tail. Or maybe it's normal for em to click when something like that happens?