isuraeru 0 Newbie Poster

The scenario:
We tried to install WinXp in it but we failed. So we installed MacOs in it again. Before it came to completion, the installation freezes. We tried to eject the MacOs installation cd but we it didnt work. We poked it but still no effect. The pc displays only a gray background with a folder icon and a "?" inside it.

what seems to be the problem? how can i fix it? I really need your help guys ASAP... thanks in advance! Happy Holidays!

PS: if you want you can im me in YM. my YMid is: isuraeru02