I have a Dell 5100 laptop that I am working on. Upon bootup it prompts "No Operating System Found". I am trying to install Win XP Pro and go through the beginning steps, deleted partition, created new one, formated in NTFS then it starts to copy Win XP Install files. Goes through that process and at the end, it tells me it's going to restart the laptop in "15 seconds" but when it does, it starts from the begining of the install again. It keeps going in this cycle. What could it be?

Joe