If you get the problem again, hook the Empeg up to your computer with your serial cable and run hyperterminal so you can see what it is doing. This sounds a lot like a problem I had one time with one of mine that was rebooting once every second or so. I fixed it with Tony's help but it turned out that it was probably just a symptom of a bad hard drive cable. The fact that it intermittently working seems to me to be another sign of a bad cable as well.