hello guy, thanks for this nice place, someone from www.omanbaforum.com introduced me here. well here's my problem. i have a desktop power mac g4, i'm trying to start it but when i press the power button, an orange screen comes up with an hourglass spinning, then nothing. the hourglass spins forever. i do'nt know what to do and don't know what's wrong. it's a computer i got as a gift. i havenever used a mac before so please be easy on me. how do i fix this? thanks.