Stuck in grub rescue shell

[Luciana Napolillo]

Hello! I've been trying to solve this problem for nearly two days. Googled
for hours, but couldn't get any solutions.
I installed ChaletOS, but when trying to boot it for the first time once
installed, I was sent to the grub rescue shell. I followed these steps that
I found googleing, to set the "prefix" and "root" variables correctly
(since they weren't):

   1. set root=(hd0,msdos2)/  *--> When issuing the command: "ls
   (hd0,msdos2)/" it shows the linux root, so I know this is the correct
   partition.*

   2. set prefix=(hd0,msdos2)/boot/grub/i386-pc    *--> here is where I
   found all the .mod  files where at (also tried with *
*usr/lib/grub/i386-pc which also contained .mod files) *
   3. insmod normal  * --> This is where the problem is. I get this error:
   symbol not found: 'grub_divmod64'.*


Could you please give me a hand? I cannot boot from a live CD, because grub
won't let me, and I'm certain that my BIOS boot priority is configured
correctly to boot from my USB (which I could do perfectly before all this
happened), so I need to solve it somehow from the grub rescue shell :(

Thanks in advance,
Luciana