[Party of one]

I'm total confused. I get this "Disc boot failure, Insert system Disc and press enter. I've tried every disc I have. The shuttle won't let me in. Wow It took along time for me to try a computer system. I guess with all the sweeping (fixed now) problems and now this. It says my mirror 1X2 is off line. I'm glad I wasn't doin a show. I need help. Anyone.......