Q: hi  dear i have a ibook g4 12just about a week , a go it will no boot at all all ways gives me a message

hi dear i have a i book g4  that worked fine but just a week a go it will no turn on only a minit then a see a message saying in 4 languges tunoff or restart i do turn off and apeers a same thing i love to gat some helpe or some uodate but i dont have a nother mac i have a hp laptap win 7 do you think i can downlowd it on my laptap and then move it to ibook g4

thanks