i dont know anything about your comp, but if your using a cheap generic PSU(power supply unit) that could also be the cause...
i tested a cheap generic 350watt psu, and every so offten when it booted up or shutdown, it would give me that IRQ_NOT_EQUAL_OR_LESS_THAN error same as you.
i tested a cheap generic 350watt psu, and every so offten when it booted up or shutdown, it would give me that IRQ_NOT_EQUAL_OR_LESS_THAN error same as you.