My laptop came preinstalled with Windows 7, and recently I tried to install Ubuntu 12.10, but my laptop doesn't boot the cd. I was successful in installing Ubuntu on another laptop with the same cd. I checked all bios options. Also I tried all options of wubi.exe but it didn't work.
1] you can't install Ubuntu properly without removing the Wubi installation (through Control Panel)
2] Have you succeeded in booting the same disc on another computer?
3] Which disk is it? CD_ROM? DVD-R?
4] Which tool/s you used to create it? How did you make all the installation and burn the disk?
5] Why havn't you created a USB ?