|Ok, there is probably an error message somewhere, post the EXACT error message.|
Also minidumps may have the clue.
Minidumps. Make sure it is Enabled.
Control Panel --> System --> Advanced --> Startup and Recovery --> Settings ---> Write debugging
information --> Complete memory dump.
On XP and 2003 systems, mini dumps are located at %SystemRoot%\Minidump, or c:\Windows\Minidump; kernel and full dumps are located at %SystemRoot%\MEMORY.DMP or c:\Windows\MEMORY.DMP.