You mean a new IDE cable?
Well, maybe you can help me indetify the problem by listening to my problem.
I took a microphone recording of the sound my computer makes when it dies. (Yeah, I'm weird.)
Small sound file
Ignoring the loud humming in the foreground, in the background you should hear a humming sound that dies, clicks, rises, clicks, dies, rises, clicks, dies, about three times.
...The computer then restarts and displays the words, "No boot device detected: system halted".
Reseating the IDE cable resolves the problem for about 40 minutes, and then the computer freezes and dies spontaneously, making that sound again.
Based on all that, do you think I need to replace my HD, Motherboard, or IDE cable?