Hey guys,
Look, I am the newest of the new to come to Ubuntu. I have drooled over ubuntu for YEARS, Just never really got around to doing anything with it. Anyways. I just recently installed ubuntu 12.04. It was working GREAT! well.. up until i rebooted my machine. Now im confused and don't know where to go. I would greatly appreciate any help that can be given.

Anyways, whenever I turn the machine on now, it wont detect my disk drive and sends me straight to this purple "GNU GRUB" screen (and yes i have gone through the bios and selected the disk drive to be my main boot drive.. still nothing)

Heres a direct overlay of what im dealing with when at the purple "GNU GRUB" screen:

GNU GRUB
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Ubuntu, with Linux 3.2.0-23- generic-pae
Ubuntu, with Linux 3.2.0-23- generic-pae (recovery mode)
Memory test (memtest86+)
Memory test (memtest86+, serial console 115200)
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Instinctively I select the first "Ubuntu, with Linux 3.2.0-23- generic-pae. That sends me to this command window:

mount: mounting /dev/disk/by-uuid/8ef68434-a383-41a0-bfb2-0e491648ca3a on /root
failed: Invalid argument
mount: mounting /dev on /root/dev failed: No such file or directory
mount: mounting /proc on /root/proc failed: No such file or directory
Target filesystem doesn't have requested /sbin/init
No init found. Try pressing init= bootarg

BusyBox v1.18.5 (Ubuntu 1:1.18.5-1ubuntu4) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs)