if it's going to grub, then it's skipping the cd, or possibly the cdrom is not spinning up quick enough. recheck that the bios boot order is set to boot from cd first, hardrive second. another thing to check is your media, be sure the media is bootable. if by chance the message you posted (boot from cd...) finishes up w/hit any key, then try that. the last thing i can think of is some bios have a quickboot, or fastboot, option. w/that enabled, i have seen the boot process miss the cd because it didn't spin up quickly enough. check for that option, if you have it and it's enabled, disable it.