MS Flight Sim X crash on Vista 64/M570RU

Hey everyone,
I'm having troubles with MS FSX crashing, and I'm afraid it's a symptom of a bigger problem. Here's what happens: I start up FSX, run it fine for awhile at high settings (I've tried low too, that doesn't seem to be the issue) and then crashes to desktop. I then get an error message. I had installed new drivers on my video card, but they caused a blue screen (when the sim crashed) and I've reverted. I've gotten a few, but here are the last two I got (simultaneously):

#1
Problem signature:
Problem Event Name: BEX
Application Name: fsx.exe
Application Version: 10.0.61355.0
Application Timestamp: 4643ee0a
Fault Module Name: unknown
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 0ddacba4
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 1033

Additional information about the problem:
LCID: 1033

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#2
Problem signature:
Problem Event Name: APPCRASH
Application Name: svchost.exe_SysMain
Application Version: 6.0.6000.16386
Application Timestamp: 4549b5f5
Fault Module Name: sysmain.dll
Fault Module Version: 6.0.6000.16551
Fault Module Timestamp: 46d4ef44
Exception Code: c0000005
Exception Offset: 0000000000017e13
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 1033
Additional Information 1: 5b06
Additional Information 2: 3ab7c7209a3192146aee3c491587ed94
Additional Information 3: 63e9
Additional Information 4: 7bf546c26b7932bd793f440df607cc2f

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I formatted my HD and reinstalled Vista 64 and reinstalled the drivers for everything. The vents are clear.I've tried three sets of video drivers, the ones I'm running now seem to prevent blue screen of death in addition to the CTD I'm getting.

The only hint I've gotten so far from searching the internet for several days is that video cashing/shading (excuse me if I got the terms wrong) may have caused the problem, and I might want to disable them. I'm worried about performance if I do, and besides that, I don't know how I would go about doing that.

Here come the specs:
M570RU
2ghz Dual Core T7300
7950 GTX
2 GB Ram
All stock drivers

Thanks a ton, in the past NR guys have been the most helpful I've found. I hope that I can get this problem solved with your help. Thanks again...

 

So I think I've found the solution; two guys having exactly the same problem. Unfortunately, I don't really know how to implement the solution. The link is below and the quote is the relevant reply. Note that I am not overclocking.

Here

 

Turns out one of my sticks of ram crapped out on me. Memtest86 caught that there was an error, and I removed one stick, ran it, then the other, and ran it. Only one detected errors. When I replaced the broken stick, the game was fixed.