Stable for a while, now crashing again (and often)

All the crash info is attached in zipped folders (BSOD file + performance monitor HTML file). All system specs are in the drop-down at the bottom of the post. The only change is that I've added an additional 1TB WD Caviar Black 7200rpm internal drive also. All hardware is less than 1 year old as is the Windows 7 install.

There were no real changes that happened. I was having some crazy crashing issues related to RAM, but since I adjusted timing a while back it's been rock solid. Last week it started crashing randomly though and seems to do it completely on a whim.

Thanks for any help in diagnosing this. It's driving me nuts. I've lost so much work that I've been right in the middle of because the system suddenly decides to crash (Google Chrome and Firefox are both crashing randomly too while the system is up, which never happened before either, wondering if they're related or if it's just a coincidence).

I am familiar with memtest. Could my RAM timing be off, or does it point specifically towards faulty hardware? I know memtest would tell me that, and I'll set it up and run it later when I don't have work that has to be finished.

I'm so discouraged with this RAM. Seems like every time I have any problems it's the RAM's fault. Was before, and it took a lot of playing with the timing to get the system stable. I'm not tech savvy at all so I just need something that works.

If it does turn out to be the RAM, what is some good replacement RAM (8GB minimum) that would work well with the rest of my setup?

I have CPU-Z. What am I looking for?

The issue I had before was that my RAM says 2.1V but mobo says 1.8V, not stable at 2.1V. I'm at 1.9V right now and can back it down to 1.8V if it will help in theory (in application I don't see any stability difference between 1.8V and 1.9V, 2.0V or more and it crashes).

All CPU-Z info attached via snipping tool captures.

Is OCZ Reaper generally considered to be good RAM? Like I said I want 8GB minimum. Am I better with 4x2 or 2x4?

Maguscreed said:

Code:

CRITICAL_STRUCTURE_CORRUPTION (109)
This bugcheck is generated when the kernel detects that critical kernel code or
data have been corrupted. There are generally three causes for a corruption:
1) A driver has inadvertently or deliberately modified critical kernel code
 or data. See http://www.microsoft.com/whdc/driver/kernel/64bitPatching.mspx
2) A developer attempted to set a normal kernel breakpoint using a kernel
 debugger that was not attached when the system was booted. Normal breakpoints,
 "bp", can only be set if the debugger is attached at boot time. Hardware
 breakpoints, "ba", can be set at any time.
3) A hardware corruption occurred, e.g. failing RAM holding kernel code or data.
Arguments:
Arg1: a3a039d898a5753a, Reserved
Arg2: 0000000000000000, Reserved
Arg3: f53a8e25ce8654d8, Failure type dependent information
Arg4: 0000000000000101, Type of corrupted region, can be
    0 : A generic data region
    1 : Modification of a function or .pdata
    2 : A processor IDT
    3 : A processor GDT
    4 : Type 1 process list corruption
    5 : Type 2 process list corruption
    6 : Debug routine modification
    7 : Critical MSR modification

Debugging Details:
------------------


BUGCHECK_STR:  0x109

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT

PROCESS_NAME:  System

CURRENT_IRQL:  0

LAST_CONTROL_TRANSFER:  from 0000000000000000 to fffff80002c76740

STACK_TEXT:  
fffff880`02fda5d8 00000000`00000000 : 00000000`00000109 a3a039d8`98a5753a 00000000`00000000 f53a8e25`ce8654d8 : nt!KeBugCheckEx


STACK_COMMAND:  kb

SYMBOL_NAME:  ANALYSIS_INCONCLUSIVE

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: Unknown_Module

IMAGE_NAME:  Unknown_Image

DEBUG_FLR_IMAGE_TIMESTAMP:  0

BUCKET_ID:  BAD_STACK

Followup: MachineOwner
---------

This suggests a possible hardware failure, primarily memory.
Are you familiar with how to run memtest86?

ANALYSIS_INCONCLUSIVE likely means Corrupted Dump File.
Please get more BSOD and then upload those dump files.

Can you repeat that in layman's terms? Sorry, like I said I'm not very tech savvy at all. I'm barely scraping by here.

I ran the test. There have problem been close to a dozen crashes over the past week. Do I have to run this after each crash or would they be cataloged somewhere? I have the Seven Forum diagnostic tool also and it's what I used before to post crash dumps. Should I use that or would it pull up the older dumps?