matilda21 0 Light Poster

Hi all my daughter has a Asus x8ol laptop and started to do a system recovery with the disc provided with the laptop, she followed the instructions and now has a white screen with the word ERROR (in red) accross it and in the top corner is says error 23
does anyone have any ideas on what we should do now. She backed up everything before starting, but we are just not sure what this all means, surely if they supply a recovery disc it should work. Any help or suggestions would be great, thanks.
the laptop is running vista and did not come with a vista installation cd