Maximum PC

This is not an emergency for myself, but I figured getting some input would help me understand the common error, and a possible fix. When I boot up my computer, I receive a BSOD labelled IRQL_NOT_LESS_OR_EQUAL once the OS is loaded and presents the Windows7 login page. Once the BSOD reads the memory dump, it reboots and works fine. I am glad to be able to login, but I would like to understand this error before I may possibly run into further errors. Anyone know what this BSOD dictates typically?

Core i5 750
6GB OCZ Platinum 1333MHz
Asus Maximus III (micro ATX)
Seagate Barricuda 500GB 7200RPM (Windows 7 OS)
WD Velociraptor 150GB 10000RPM
GTX 280(SLI)
GTX 280(SLI)
Ultra 1150Watt PSU

Usually that error is related to a driver that does not start properly when windows is trying to load. First step I would do is make sure that all your drivers for all your hardware are up to date.

Look in Device Manager for problems with devices. Also look in Event Viewer for errors in the system and application logs.

Nasty