Vista x64 BSOD - Help plz!

Hey all,

So i recently did a fresh install. Everything seemed fine for a while, but i am getting these weird BSOD's and application crashes (TF2, CS:S).

I ran OCCT stress tests for 6+ hours without issue. Last night, I put the OCCT into an infinite loop around 10pm and it seems a though my PC BSODed around 5:45am...so 7.5hours into the stress testing.

My temps are fine...i tried putting my CPU and GPU clocks back to stock, removed my Soundblaster X-FI and went with on-board sound...it still happened...

All very confusing and I am at a complete loss....here are some details bellow.

MSG Upon Reboot:
Windows has recovered from an unexpected shutdown.

Problem signature:
Problem Event Name:BlueScreen
OS Version:6.0.6001.2.1.0.256.1
Locale ID:1033

Additional information about the problem:
BCCode:3b
BCP1:00000000C0000005
BCP2:FFFFF80001ED76FA
BCP3:FFFFFA600352C990
BCP4:0000000000000000
OS Version:6_0_6001
Service Pack:1_0
Product:256_1

Files that help describe the problem:
C:\\Windows\\Minidump\\Mini031009-03.dmp
C:\\Users\\Andrew\\AppData\\Local\\Temp\\WER-42690250-0.sysdata.xml
C:\\Users\\Andrew\\AppData\\Local\\Temp\\WER9DC8.t mp.version.txt

I went digging in the Event Viewer and found more stuff:
Event ID: 10
Source: WMI

General: Event filter with query "SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 99" could not be reactivated in namespace "//./root/CIMV2" because of error 0x80041003. Events cannot be delivered through this filter until the problem is corrected.

Microsoft gives this link under: "Event Log Online Help" - http://technet.microsoft.com/en-us/l.../cc727148.aspx

A ton of people seem to be experiencing similar issues, BUT all have different hardware...some Nvidia based, some Intel, Some Intel CPUs, others AMD....graphics are also both ATI and Nvidia.

EDIT: Found the error log for the HL2 (TF2 & CS:S) crashes:
Log Name: Application
Source: Application Error
Event ID: 1000

General: Faulting application hl2.exe, version 0.0.0.0, time stamp 0x470c11ae, faulting module filesystem_steam.dll_unloaded, version 0.0.0.0, time stamp 0x49b02ada, exception code 0xc0000005, fault offset 0x022a72c9, process id 0xd54, application start time 0x01c9a1242f233c28.