Ok here is the problem. I have burned an ISO of windows 7 onto a DVD-R, installed a new hard drive to install the new OS. I restarted the pc, went into the BIOS, changed the first boot device from hard drive to CD-rom. Restart the pc and it says 'Boot from CD:'. I hit enter then nothing!!! It went back straight to Vista (currently running OS)??? I thought this was kind of strange so i restarted again and this time taking out the hard drive with Vista on it and tried to boot from the CD again but this time i got an error 'GRUB loading stage1.5 Error 17' what do i do to fix this? HELP!?!?!?!