BSOD by ntoskrnl.exe

I have been having this issue for a while. Just did a fresh Windows install and updated all my drivers. Please help me figure out what is happening.

I am almost positive of a hardware issue here.
I want you to follow this link it will have the most probable solution.
BUGCHECK_STR: 0x124_AuthenticAMD =
Stop 0x124 - what it means and what to try
Check for dust exclusively, and the seating of the cards. Take notice of the graphics card as well.
if you have overclocked stop, and here are some stress tests i would like you to run.
Stresstests:
Ram : RAM - Test with Memtest86+
General hardware: Hardware - Stress Test With Prime95 ( (Three pre-set configurations are available: Small FFTs and In-place FFTs, and Blend. Small and In-place modes primarily test the FPU and the caches of the CPU, whereas the Blend mode tests everything, including the memory.)
Graphics: Video Card - Stress Test with Furmark (Do the above Graphics test only with the latest drivers, and then Run it until the temperatures stop increasing; should be less then 10 minutes. If you don't see any crazy glitches or distortion on the screen, The test most likely passed. Take note if the Temperature gets too high, or you see Visual artifact - Wikipedia, the free encyclopedia to stop the test.)
As well my own advice, if none of those work at all i suggest lowering the vcore settings a tiny tad bit.

So I ran Memtest86+, I'm not nor have I been overclocked, and went through the steps in the Stop 0x124 link. When I ran Furmark, following instructions per the link, it only ran for 30 seconds then gave me this error:
"The NVIDIA OpenGL driver lost connection with the display driver due to exceeding the Windows Time-Out limit and is unable to continue.The application must close."
It then reset my video with out Furmark running.
My system:
Video: NVIDIA GeForce GTX 550 Ti
Audio: Creative SB X-Fi
Board: ASUSTeK Crosshair IV Formula
Processor: 3.85gig AMD Phenom II
16 gigs ram
Windows 7 x64