[bootloader off a usb drive]

Check out the "Windows To Go" feature that is available in the latest version of Windows 8 and Windows Server 2012. It allows you to install and run Windows from a portable USB drive. This feature should be what you're looking for.

 

Learn more about Windows To Go at:

 

https://www.microsoft.com/en-us/windows/enterprise/products-and-technologies/devices/windowstogo.aspx

[offline nt for windows 8]

That's because offline nt password & registry editor doesn't support UEFI firmware that is used by most Windows 8 computers. The traditional bootdisks won't work any longer and you need to use a UEFI compatible tool such as PCUnlocker Live CD. If your problem has resolved, it's time to close this discussion now.