6 aug 2010 IRQL_NOT_LESS_OR_EQUAL – TweaksForGeeks by Kasper | posted in: WWW | 0 IRQL_NOT_LESS_OR_EQUAL Blue Screen Of Death I found this very useful site while looking for help on the above error. It was, as suspected, the new RAM block that caused the trouble… via IRQL_NOT_LESS_OR_EQUAL – TweaksForGeeks.