Page_fault/irql_less_or_equal

Unfortunately, my computer, for about a month now, is going into spontaneous bouts of "PAGE_FAULT_IN_NONPAGED_AREA" and "IRQL_LESS_OR_EQUAL" fits. All games I try to play on the computer are crashing, also.

I've read through this (http://www.techspot.com/vb/topic17691-pg1.html&pp=20) entire thread, and a few others. Ran memtest and tried all the driver fixes, but to no avail. Done full diagnostics on hardware twice, and all passed, so I'm a little lost. I just did I fresh install of XP after replacing my HDD, and so only have 3 error dumps so far. Thanks a lot for taking your time to read this and help in any way.

Dumps - http://www.geocities.com/hurshwhat/Mini022106-01.zip

Edit- ah forgot, my system specs are as follows:

CPU = Intel Pentium M Processor
CPU Speed = 1999 MHz
No. of CPUs = 1
OS = Microsoft Windows XP Service Pack 2 Ver 5.01.2600
Main Memory = Capacity: 2047MB
Drive [C:\] = Local Disk Free Space: 25.03 GB (Capacity: 51.23 GB )
Graphics Card = NVIDIA GeForce Go 6800
--Type of Chip = Unknown Video Chip
--Video Driver = nv4_disp.dll
--Version = 6.14.10.7851
--Updated = 09/08/2005 11:58 PM
--VendorId = 0x10DE
--DeviceId = 0x00C8
--SubSysId = 0x19C1028
--Revision = 162
--WHQLLevel = Signed(Date:Unknown)
--VRAM = 256.0MB
--AvailableVidMem = 244.4MB
--AvailableTextureMem = 491.0MB
Sound Card = SigmaTel C-Major Audio
--Sound Driver = STAC97.sys
--Version = 5.10.4255
--Updated = 03/10/2005 11:56 PM
Network Card = Broadcom 440x 10/100 Integrated Controller
--Network Driver = bcm4sbxp.sys
--Version = 4.25.0.0
--Updated = 05/26/2004 09:18 PM
Network Card = Intel(R) PRO/Wireless 2200BG Network Connection
--Network Driver = w29n51.sys
--Version =
--Updated = 10/21/2004 09:56 PM
Motherboard = 0C5668
--Manufacturer = Dell Inc.
--Version =
--Serial Number = .HS5MS81.CN129615AB2588.