Since my computer (running Windows 7) got a few bluescreens earlier today (DRIVER_IRQL_NOT_LESS_OR_EQUAL, HAL_INITIALIZATION_FAILED, 0x0000007E also listing the file SYMEFA.SYS), I am unable to open Norton Internet Security. I try double-clicking the icon, nothing happens. I then go to the Start menu, highlight NIS and click the task Open Norton Internet Security, it gives me the message "C:\Program Files\Norton Internet Security\Engine\19.1.0.28\uiStub.exe Unspecified error", then after a few minutes a box pops up asking if I want