I have a motherboard without a heatsink on it, but I have a few heatsinks that came from other motheboards. How van I get one of the other heatsinks to stay on the processor? They are too big to hook on, and I can't find a heatsink small enough to stay on. Can I just leave the heatsink sitting on the processor without anything attached to it? But then I wouldn't be able to have the computer stand upright. Could I glue the heatsink to the processor?