Post us a log.
Register Dr. Watson as the default system debugger (if it is not already the default debugger). Dr. Watson for Windows NT logs diagnostic information about process failures to a log file (Drwtsn32.log). Also, you can configure this program to produce memory dump files of failed processes that you can analyze in a debugger to determine why a process fails.
To set up Dr. Watson to trap user-mode program errors, follow these steps: 1. At a command prompt, type System Root\System32\Drwtsn32.exe -I, and then press ENTER.
This command configures Dr. Watson as the default system debugger.
2. At a command prompt, type System Root\System32\Drwtsn32.exe, and then select the following options:
Append to existing log file
Create crash dump
3. After the computer restarts from the STOP 0xC000021A error, run Dr. Watson (Drwtsn32.exe).
4. View the Dr. Watson log to determine what user mode process may be causing the problem.
5. If the Dr. Watson log does not contain sufficient information to determine the cause of the problem, analyze the User.dmp file to determine the cause of the STOP 0xC000021A error.