I have a Toshiba Portege M200 thats giving me a head ache :P
I just got the machine, it was working great but was used, and I wanted to erase everything on it and start fresh. I preformed the steps listed here http://home.allegiance.tv/~joem298/ and everything worked great!
I then messed up the software while trying a few things to configure the machine to more of my liking (software wise, have not changed the hardware at all).
The M200 only supports a handful of Toshiba's CD/DVD drives to boot from, I do not have any. The recovery CD is just a bootable Ghost imager. When i preform the steps from http://home.allegiance.tv/~joem298/ I get the Ghost imager to come up, it formats the drive, loads the files, says complete, reboots and then all i get is the post, then a blank screen with a flashing DOS cursor in the top left "_" thats it. I've attempted to re-ghost the machine several times, trying different things like formatting the hard drive first, or creating a partition and not formatting first, or even removing all partitions first, and then running the Ghost app. each time the same result.
Then I tried a few hardware changes, I installed known good Memory, a known good hard drive, playing with the limited system bios (which are updated to the highest) and nada.
I even removed the hard drive from this machine and installed it into a sled to see if Ghost was actually writing files to it, and it is, every-things there.