After I configure a HP DC7700 sff computer with all the software that I need, I run sysprep and store the image to a server. I then pull the image back down to another DC7700 and the problem that I am running into is that I am unable to activate Windows XP. I enter the activation code from lid of that computer and the activation screen just sits there. It does not say successful or failed. ALL I have is a blue activation screen. I have been able to image previous model HP sff computers but this model is being shipped with a preactivated OS.