I just did this today and when it booted back up, it asked for the admin password which there wasnt one. I didnt give it a password. I ended up formatting
My stupid keyboard wouldnt even work after the bios

Sounds as you skipped an early part - setting admin passwords. Also, if your keyboard is USB, the usb drivers may not have loaded yet. Or they were somehow disabled.
The guide, I feel, is out-dated in that it works better for Win98 and early XP. I use InstantSheller - which, while there can be issues with, they are less common.