Ok so i built this computer for a friend last night, and it runs great, except for one thing. Its a out-of-the-box P4 1.8ghz. Let me comment real quick on - Dear god that is a huge heatsink and fan for such a little ass chip!- with that said heres the problem:

When the pc is running u can hear the fans, no big deal because the case has a 12 fan setup in it. Well out of no wear, i hear this loud ass rattling noise, almost like ball bearings bouncing around inside a fan. So i look in the case, and use my finger to stop the p4 fan, noise goes away. So my question is: Is this noise normal for a brand new P4 setup? Will it go away or is there a problem? The fan/h-sink combo is the black and silver on with the two levers that latch it down, since it wasn't doing this when i started i think it may be rubbing the heatsink because it makes the noise when i "dead-spin" it, but i wanna be sure before i take it out because then the silicon layer between the proc and h-sink will be broken, and i'm not sure i can stop it from rubbing anyway (if it is).