Ubuntu :: Grub Displays But Doesn't Load Menu Options

I am using Ubuntu 10.10, manually installed, on a Dell Studio 15 laptop, dual booting with Windows 7.While a few kids were playing nearby where I was working, one of the pillows they were playing with hit my laptop's screen and moved the screen's hinge backwards, applying pressure past where the hinge ends. This didn't seem to cause any physical harm to the computer, but I moved away from where they were playing, and in the process, shut the laptop, putting it into sleep mode. I opened the laptop and entered my password to unlock it. About half a second after entering my password and displaying the desktop and open windows, it brought up the password prompt again, as if I'd just opened my laptop up and removed it from standby, although I had not in fact touched it since I had entered my password a mere half second before. I thought that that was strange, and then attempted to continue my work. However, although the mouse worked fine, when I attempted to apply a keyboard shortcut (Ctrl+Alt+2, which runs a 2-finger scroll script and has to be run every time I take the computer out of standby), Ubuntu didn't register it (I didn't touch the keyboard otherwise, although I should have checked whether it worked all =).

I tried it again, and it still did not apply the script. Then I thought, "Oh, the pillow must have knocked something out of whack. I'll restart." When I restarted, grub loaded as usual, but the timeout ("loading the primary in Xs." sort of thing) that it usually displays did not display this time. I didn't notice it at the time; I selected Ubuntu, and it appeared to be loading it, removing the grub menu, but then hung. I waited 5 minutes for the computer to display the login screen, but it did not, so I restarted again, thinking that it might just be something stupid. It didn't work again, hanging again. I tried this with both the most recent linux kernel and the second most recent kernel, neither of which worked. But what was interesting is that Windows 7, which is also on the grub menu, loaded and displayed perfectly, as did GRUB Invaders, a game that can be loaded directly from grub.After this little escapade, I thought something was just wrong in grub.cfg, and it somehow wasn't mapping the Ubuntu menu entries to the appropriate OS and kernel. So I loaded up a live CD, and attempted to look at the linux entries. These are the menu entries 10_linux, 00_header, and 20_linux_xen.

10_linux:

Code:

#! /bin/sh
set -e
# grub-mkconfig helper script.
# Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc.

[code]....