Hi. Have you set the boot order in the bios to boot from cd first?. Then run a repair boot from the DVD
I have already did this many times. Does not recognize cd. Even made a new cd....didn't work either. I have since removed the "CMOS" battery, left out for 2-3 hours to clear it. Put back in and let charge for 2 hours. Now it will not start up, runs a series of start up lights and cuts off...like the power supply is shot.