Hi, I have a HP 1000 21MX that wont bring up the Power supply. Has AC to it and the fans come on. It has a some what different battery backup connections on the rear than a 2117F. I tried the resister jumper from a 2117F but no go. There is no voltage output from the PS on any leg. Is there something different about these or do I need to trouble shoot the Power Supply Thanks, Jerry Jerry Wright JLC inc g-wright at att.net