BSOD During startup

How hot?

Use this link and fill out your System Specs.
Speccy Free System information Utility

Use Core Temp , to check the CPU temps when at idle, under load and/or testing.
Let us know the minimum and maximum temps you get.

Last two recent crashes:

Code:

STOP 0x00000050: PAGE_FAULT_IN_NONPAGED_AREA
Usual causes:  Defective hardware (particularly memory - but not just RAM), Faulty system service, Antivirus,  Device driver, NTFS corruption, BIOS
Invalid system memory was referenced.
Could not read faulting driver name
PROCESS_NAME:  WmiPrvSE.exe
FAILURE_BUCKET_ID:  X64_0x50_BAD_IP_nt!_??_::FNODOBFM::_string_+43d86
--------------------------------------------------------------------------------------------------------------------------------------------
STOP 0x00000109: CRITICAL_STRUCTURE_CORRUPTION
Usual causes:  Device driver, Hardware (Memory in particular)
A hardware corruption occurred, e.g. failing RAM holding kernel code or data.
IMAGE_NAME:  memory_corruption
MEMORY_CORRUPTOR:  ONE_BIT
FAILURE_BUCKET_ID:  X64_MEMORY_CORRUPTION_ONE_BIT

This might be caused by the CPU overheating and throttling causing the memory to have an error.

First thing to do is make sure the CPU is not overheating.
Do not do any further testing unless the CPU is running at safe temps.

Can you download CPUZ and post a snip of the CPU, Mainboard, Memory, and SPD tabs.
For posting the information , enter 'Snipping tool' in the Start button > Search box, hit enter. Select the area you want to post and save to a convenient place.
How to Post a Screenshot in Seven Forums
Go to your BIOS and tell us what the CPU, RAM and the CPU integrated memory controller voltages are.

Run memtest86+ for 7 full passes, with all RAM cards installed.
Best to run overnight as depending on the amount of RAM you have may take several hours.
If you get any errors you can stop the test.
RAM - Test with Memtest86+

From your App Event Log.
42,702 of these Warnings.

Code:

Event[42702]:
  Log Name: Application
  Source: NVIDIA OpenGL Driver
  Date: 2012-09-14T16:00:43.000
  Event ID: 2
  Task: N/A
  Level: Warning
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: KKnutson-PC
  Description: 
The NVIDIA OpenGL driver has encountered
an out of memory error. This application might
behave inconsistently and fail.

Update the nVidia graphics driver.

Those temps are high, AMD usually run cool. I have seen many running stress tests at 50°C or below.
Are you using the stock CPU cooler?

Max CPU temp is 61°C, add 5°C for the core temp max core temp is 66°C.
AMD FX-8120 Product Details

Were you OC'ing the CPU and RAM?

Post the full crash reports if your have another crash.