Many new models of laptops are with BIOS settings default to Windows 8. Some of the drivers for come with your Windows 7 disc may not work properly with these settings.
SOLUTION: Restart your computer, go to BIOS setup. Different brands use different keys, e.g. Lenovo, press ENTER key, while for HP, press F10. Check for the option, like "CSM", "Legacy" mode for booting. Enable these options and try installation again.