I need help figuring out why my computer makes ticking sounds after I shut it down. I asked a technician at Freys and he told me that it needed a new hard drive. So I went and replaced the hard drive and it keeps making it. In addition to the sound it also has a light that blinks in the front in unison with the ticking sound. It's as if the computer is not turned off all the way. I thought about replacing the case and/or power supply, but want somebody else's opinion before I undertake that. My operating system is Windows xp and it seems to be working fine. I have scanned for viruses and spyware and feel it is fine in that respect. My CD burner hadn''t been working right also. It would get extremely hot, so I went ahead and replaced that to see if that was causing the problem. Now the light of the burner also blinks along with the light in the front of the case in unison with the ticking sound. Please give me some advice guys. Thanks.