I'm wondering if anyone can help me identify a model number etc on this cpu cooling fan. it started making a vibrating noise. i have had a couple shut downs and reboots, a couple times happening when i tried to play some sound. it doesn't seem to be running as fast as it used to. so i am thinking it might be going bad. i want to either replace it or upgrade it. but i am not sure if i am limited to the type of clip that holds the fan in place. thanks in advance for any help you can provide.