Going on the theory that some people on here have an electronics background, (myself included) I would avoid that course because of the cost involved. I'm not too bothered, but for educational purposes it would be good to know the cause of the failure through the combined knowlege of forum contributers, if possible...perhaps through past experiences. I have experience with bog standard DVR's, but this new breed seem to alude me. The unit obviously does post checks, but when the power, hardDrive and camera- connected checks are completed by the bios..it surrenders..thats whats bugging me. There is no output to the monitor, if thats a clue. In other words it quits before allowing A/V out.