Windows 2000 Server boot problem

Hi,

I was updating my server (Win2k Domain Server) with Service Pack4, during the updation process, the server started dumping and from then on it is rebooting continuously on win 2k server screen loading.

I applied the help posted in the site given below:

http://www.jsifaq.com/SUBA/tip0100/rh0182.htm

from then on i am getting this error with a crash dump.
STOP: c00000135 unable to locate DLL.
The dynamic link library winsrv could not be found in the specified Default local path.

Pl help, its urgent.
Regards,
Vivek