DRIVER_IRQL_NOT_LESS_OR_EQUAL message indicates that the system attempted to access pageable memory using a kernel process IRQL that was too high. Drivers that have used improper addresses typically cause this error.

This message has four parameters:

Memory referenced.
IRQL at time of reference.
Type of access (0x00000000 = read operation, 0x00000001 = write operation).
Address that referenced memory.

I would check your system properties to see if you are experiecing any problems with drivers and if you have more than one stick of memory, try removing one or another.
Poor quality memory and cheap NIC (network cards) often exhibit this