I was recently working inside my pc case, when i dropped a screw in my case. I shook my case a little bit hoping to get it out. Im not sure if it acually came out or not, because i had a bunch of screws laying on my carpet, and being on carpet it doesnt make any noise. Anyways, now when i run my pc, i hear a ticka ticka ticka sound. Do you think that is the screw toughing something that is spinning? or i screwed up something by shaking it. I think the sound is coming from the hard drives.