Hello Renee,
Sorry to hear that the image is off again. It could be that the computer display settings are not being saved when you restart the computer? If that is the case, you may need to contact your IT department or System Administrator to see if you need special permissions to save the computer's display settings. Are the settings on the projector saved the way you set them? If not, then there is a way to store your changes so that when you connect the computer the image appears correctly.
If you would like for someone to come onsite, visit www.prometheanworld.com > How To Buy, many of vendors also do installations and service calls.
Thanks!