No - No Sounds
I push the on button, the LED's all briefly illuminate (as they always have), the fan immediately starts and the HD simultaneously whirs (very quietly) and makes a few clicks.
After that, it sits there with the fan running constantly, which is unusual, as I believe when it was working, the fan just ran briefly and then shut off.
The screen never so much as flickers. After about 5 minutes, the computer automatically re-starts on it's own, as if it's attempting to boot itself.
I'm not a computer expert at all, so I apologize for my descriptions & understanding of what this thing is doing appearing lacking, but what it looks like to me is that the computer is getting hung up during it's initial boot process. The fan, which I'm guessing is only supposed to run for a few seconds as part of a system test upon startup, appears to keep running because the system is stuck a few steps into the process. Just a (very uneducated) guess on my part, of course.
But I have no idea what controls these things, so, well, that's why I'm here, I guess.
Many thanks for the help so far!!!