Quote Originally Posted by enthusiast View Post
Those faint clicks could be the hard drive. They make this sound when they die. Sometimes they will do this if they cannot get enough power as well.
I was thinking hard drive also... except that none of the power lights come on at all. It's probably worth pulling the hard drive though and seeing if it powers up though, just in case it's shorting out and pulling too much juice for everything else to power on, although I've never seen that actually happen.