Any chance that any of the keys, power button or mouse clicker are being held down by a foreign object? Seem to recall a similar behaviour after reassembling a 2300c where the mouse clicker was held down by the improperly reassembled case....Might want to disconnect keyboard and mouse and see if that helps. Careful with the ribbons. Click of death DuoDocks are easy to fix and could also be to blame for this situation. Try booting without battery. That might be drawing enough current to sink a marginal DuoDock power supply... F