Hi,
You can boot into Advanced Boot options and choose Disable Automatic Restart on system Failure to get the error message.
Disable automatic restart on system failure prevents Windows from automatically restarting if an error causes Windows to fail.
Refer the following link:
Advanced startup options (including safe mode)
http://windows.microsoft.com/en-US/windows7/Advanced-startup-options-including-safe-mode
What information appears in event logs (Event Viewer)?
http://windows.microsoft.com/en-US/windows7/What-information-appears-in-event-logs-Event-Viewer
The log file will be %systemroot%\Minidump which is normally C:\windows\Minidump
If the files don't exist then setup your system to record them;-
a. Go to Start and type in sysdm.cpl and press Enter
b. Click on the Advanced tab
c. Click on the Startup and Recovery Settings button
d. Ensure that Automatically restart is unchecked
e. Under the Write Debugging Information header select Small memory dump (256 kB) in the dropdown box
f. Ensure that the Small Dump Directory is listed as %systemroot%\Minidump << where your .dmp files can be found later
Click OK twice to exit the dialogs, then reboot for the changes to take effect.
You may refer the link provided for more information about dump files:
How to read the small memory dump files that Windows creates for debugging
http://support.microsoft.com/kb/315263
You can also download the debugging tool from the link mentioned below and check.
Download and Install Debugging Tools for Windows
http://msdn.microsoft.com/en-us/windows/hardware/gg463009.aspx
I would also suggest you to perform the steps from the article and check if the issue persists.
http://windows.microsoft.com/en-us/windows7/Resolving-stop-blue-screen-errors-in-Windows-7
Hope this helps and keep us posted.