I originally had windows media center edition 2004 on my computer and then had downloaded the free beta trial edition of Vista. Eventually my trial session was beginning to run out so I put my XP disc back into my system but whenever i tried to install it my computer says that "Setup could not read the CD you inserted, or the CD is not a valid Windows CD". My trial editon has now completely expired and I can no longer log into my computer. My computer is a Gateway GT5040 so if anyone could help at all please let me know!!!
