I googled a bit and went to the GRUB Manual (http://www.gnu.org/manual/grub-0.92/...e2-errors.html
) and found out a little more about what Error 28 means:
28 : Selected item cannot fit into memory
This error is returned if a kernel, module, or raw file load command is either trying to load its data such that it won't fit into memory or it is simply too big.
Here are some possible solutions:
And I think it comes down to your motherboard and your BIOS.
And the solution:
"UPDATE: grub .93 (from CVS) solved the boot issue."
And to download the .93 GRUB, it can be found here:
If that doesnt work, maybe try flashing your BIOS to a newer release?