I'm not quite sure what your saying, does the camera not power up at all, or just not with the software your using.First port of call would be to disconnect the camera from EVERYTHING and see if it will power up, you need to determine if its a faulty...
Have you not got the original disc that came with the printer ?Otherwise you will have download the software from canonhttp://www.canon.co.uk/Support/Consumer_Products/products/Fax__Multifunctionals/InkJet/PIXMA_MX_series/MX924.aspx?type=download&pag...