Page_fault_in_nonpaged_area error happening at random

Hey ppl im getting a page_fault_in_nonpaged_area error with this info :

0x00000050 (0x80000010, 0x00000000, 0x8057A4Fa, 0x00000000)

here are some dumps - 4 from the last day and 4 from the day before I belive the same crash. ppl please analyze my dumps and respond as quick as possible.

A bugcheck of 50 means.

0x00000050: PAGE_FAULT_IN_NONPAGED_AREA

Requested data was not in memory. An invalid system memory address was referenced. Defective memory (including main memory, L2 RAM cache, video RAM) or incompatible software (including remote control and antivirus software) might cause this Stop message, as may other hardware problems (e.g., incorrect SCSI termination or a flawed PCI card).

Go HERE and follow the instructions.

Please let us know the results.

Regards Howard