Installed Ubuntu for dual-boot only Windows comes up (tried boot-repair)

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http://askubuntu.com – On my computer I have a dual-boot of Windows 7 and Ubuntu 12.10. Ubuntu was just installed from a USB flash drive. After the installation finishes, my computer boots straight to Windows without any indication that either GRUB or Ubuntu is even installed. If I boot from the USB drive again, the install screen shows up as if I didn't install it. I've tried boot-repair and got: link to paste.ubuntu.com And this is what I tried to repair: sudo chroot "/mnt/boot-sav/sda7" dpkg --configure -a sudo chroot "/mnt/boot-sav/sda7" apt-get install -fy sudo chroot "/mnt/boot-sav/sda7" apt-get purge -y (HowTos)