Rajiv,
From what I can find on the web, it would appear that you are running vista:
http://forums.sun.com/thread.jspa?threadID=5209511&tstart=33390
If changing the user account control does not work, I would try to remove the server as a windows server, you may want to do this anyway since starting and stopping the server should be faster;
<WAS_HOME>/bin/WASService.exe -remove <nodeName>
The nodename is listed in the service panel in windows, or can be found in the <PROFILE_DIR>/config/cells/<cellName>/nodes/<nodeName>
This should remove the call which is failing.
Frank