Windows 7: BSOD many times a day over the last week

I have tried restoring , updated BIOS, re-installed video cards, memory diagnostic. Any suggestions are extremely welcomed.
Many thanks in anticipation.

1, Uninstall the AT&T Firewall with AT&T Integrity Removal Tool

2, Update drivers that has caused BSODs:
Intel(R) HD Graphics Family
fffff880`0563f000 fffff880`061f6de0 igdkmd64 Tue Jul 19 23:39:50 2011 (4E25F9A6)

Atheros AR8151 PCI-E Gigabit Ethernet Controller (NDIS 6.20)
fffff880`05349000 fffff880`0535e000 L1C62x64 Tue Dec 28 03:42:39 2010 (4D194E9F)

Intel(R) Centrino(R) Advanced-N 6230
fffff880`04a83000 fffff880`05309000 NETwNs64 Sun Sep 18 11:26:48 2011 (4E75B958)

3, Update old drivers:
Intel(R) Mobile Express Chipset SATA AHCI Controller
fffff880`01050000 fffff880`011a4000 iaStor Thu Jan 13 02:50:12 2011 (4D2E5A54)

Renesas Electronics USB 3.0 Host Controller
fffff880`040af000 fffff880`040c8000 nusb3hub Fri Nov 19 02:34:24 2010 (4CE5D420)

Intel Turbo Boost driver
fffff880`07165000 fffff880`0716c000 TurboB Tue Nov 30 00:02:31 2010 (4CF43107)

Intel(R) Display Audio
fffff880`07b36000 fffff880`07b89000 IntcDAud Fri Oct 15 10:28:17 2010 (4CB810A1)

Realtek High Definition Audio
fffff880`07811000 fffff880`07ad0280 RTKVHD64 Tue May 31 11:18:41 2011 (4DE4B271)

Hi all
I am still having intermittent issues with my laptop blue screening.
I checked and all the drivers from the previous post were up to date. I did install AT&T software, but sadly I am still having issues. All these months later.
Again, any help would be much appreciated. I have attached an updated diagnostics zip file.

Did you use the AT&T Integrity Removal Tool? You still have some of the drivers loaded:

fffff880`02e78000 fffff880`02f0e000 vsdatant Mon Aug 30 17:11:16 2010 (4C7BCA14)
fffff880`044a0000 fffff880`044c60c0 vnaap Mon Dec 29 13:10:44 2008 (4958BE44)

These drivers still need updating, if Dell's homepage doesn't have any newer drivers then try the hardware manufactures homepages instead:

NVIDIA GeForce GT 525M
fffff880`0f291000 fffff880`0ff85000 nvlddmkm Tue Oct 02 20:21:13 2012 (506B3099)
Driver Reference Table

Disk Class Filter Driver for Accelerometer
fffff880`04078000 fffff880`04088000 Accelern Mon Dec 13 18:33:51 2010 (4D0658FF)
Driver Reference Table

Intel(R) HD Graphics Family
fffff880`05817000 fffff880`063cede0 igdkmd64 Tue Jul 19 23:39:50 2011 (4E25F9A6)
Driver Reference Table

Intel(R) Management Engine Interface
fffff880`063cf000 fffff880`063e0000 HECIx64 Wed Oct 20 01:33:43 2010 (4CBE2AD7)
Driver Reference Table

NEC Electronics USB 3.0 Host Controller Driver
fffff880`0f200000 fffff880`0f231000 nusb3xhc Fri Nov 19 02:34:25 2010 (4CE5D421)
Driver Reference Table

Intel(R) Mobile Express Chipset SATA AHCI Controller
fffff880`01050000 fffff880`011a4000 iaStor Thu Jan 13 02:50:12 2011 (4D2E5A54)
Driver Reference Table

Intel Turbo Boost driver
fffff880`07165000 fffff880`0716c000 TurboB Tue Nov 30 00:02:31 2010 (4CF43107)
Driver Reference Table

Realtek High Definition Audio
fffff880`07811000 fffff880`07ad0280 RTKVHD64 Tue May 31 11:18:41 2011 (4DE4B271)
Driver Reference Table