i have a problem with my computer where the harddrive play AVI in a jerky frame rates.  It used to play fast but now, it gets jerky.  Before I remove the harddrive, it play fine, now  I noticed the busy red light doesn\'t flashes anymore.  I check the motherboard and the pins are properly connected.  So, after I remove my hard-drive and made a temporary switch, the computer started to act a little weird, by that i mean slow.  I have like 3 fans on my computer, one on top, one on side, and one on front next to the hard-drive.