Take a look here
http://aumha.org/win5/kbestop.htm
--
Regards,
Yuriy
This posting is provided "AS IS" with no warranties, and confers no rights.
"Andy" <> wrote in message
news:373CE73F-7A59-4D5E-BC40-...
> Vista was working well for me for a few restarts then I tried to install
an
> older sound blaster live 5.1 driver and before it even finished installing
it
> froze, since then when I boot it doesn't ever get past the gray vista
loading
> bar and the system automatically restarts. I've tried the startup fix
program
> in the and it said it couldn't find the error.
>
> I told it to stop automatically restarting on crash and it gave me error
> c000021.. status of 0x00000000 (0x00000001 0x001003c0)... if anyone can
> figure out what that means.
>
> The only other drivers I installed where ATI radeon vista drivers and an
> AirLink wireless card drivers.. both worked fine
>
>