Installed 12.04 from CD - won't boot

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http://askubuntu.com – I installed Ubuntu 12.04 from a CD on a Toshiba Portege laptop. The installation process seemed to go normally, but now when I try to boot it, it hangs at the "Toshiba Leading Innovation" screen. Booting from the CD does work (which is what I'm doing now). The installation wizard says that there is a 12.04 partition on /dev/sda2. I checked that the BIOS's boot order is HDD first. With the installation CD in the drive, I can get to a grub menu by pressing Esc, but I don't know what to do with it. I tried installing Boot-Repair using the instructions here (https://help.ubuntu.com/community/Boo (HowTos)