Critical error on Windows 7, Shutdown in one minute

Having an issue with one or two models of Dell Laptops (Latitude D520 and Latitude D530 respectively,) where the user is performing normal tasks, and an error will pop up on the screen stating that a critical error occurred, and windows will restart in one minute. The command "Shutdown -a" does not stop the restart. This restart event is random, and will happen maybe 5 or 6 times in a row, and then it wont happen for a few days.

The most common entries in the event viewer are:

Warning
Log Name: Application
Source: SceCli
Event ID: 1202

Security policies were propagated with warning. 0x4b8: An extended error has occurred.

Error
Log name: Application
Source: Application Error
Event ID: 1000

Faulting application name: Services.exe, version: 6.1.7600.16385. Faulting module name: ESENT.dll, Exception code 0xc0000005
Fault offset:0x000341c7
Faulting process id: 0x1f4
Faulting app path: C:\Windows\system32\services.exe
Faulting module path: C:\Windows\system32\ESENT.dll

Any assistance on how to resolve this issue would be most appreciated.