Hi, I got a new system with 200GB Segate SATA just one week back and it makes noise whenever harddisk gets activated. Actually my distributer replaced me with a new harddisk, though I check it in his place itself I did't get any noise but when I installed in my Home PC again I am getting the same noise as my old HD did. Is this any problem? or it is normal. Will it reduce my PC performance? Kindly suggest me any solution. Or is this the problem due to any voltage/earthing issues? I am little bit worried about it Thanks in advance.