grub2 - How do I Fix Grub Error 15 on New Dual Boot Install

I just installed 12.04 to Dual Boot (separate partitions) with an existing Win 7.
Upon reboot after install things freeze after Grub 1.5 with a Grub Error 15 message.

Is there any easy way to fix this? (I am posting this from my second computer)

UPDATE: I managed to boot into both 12.04 and Win7 using BIOS:

• Selected the disk with the Win7 'C' Partition: resulted in the same error message


• Rebooted, tried the disk with the Ubuntu Partitions:
  *Grub Menu loaded:


• Managed to boot 12.04, rebooted, used BIOS again:


• Managed to boot Win 7

So, I have access to my computer again (thru BIOS), but this has been a pretty crappy install experience.

Garth

I used the the Final release 12.04 Ubuntu install disk, reformatted all Linux partitions, and expected a simple clean install.
Other than specifying the Ubuntu Partitions, I did a basic install of 12.04.
No way I did do anything to get this crap error failure!
I have no idea why my install resulted in a Grub-15 error.