BSOD even after reinstalling windows and replacing motherboard.

Please start by running these free diagnostics to rule out the most common problems: http://www.carrona.org/initdiag.html
Also, as you've related memory problems, also run the free Prime95 program on this page: Additional Hardware Diagnostics

SP1 isn't installed, please do the following:

Installing Windows 7 Service Pack 1
1. Visit the PC manufacturer's website and update ALL drivers. DO NOT use Windows Update or the "Update drivers" function of Device Manager.
2. Check Device Manager for any unknown/disabled devices - if there are unknown/disabled devices, fix them with the latest drivers from the device manufacturer's website (not the PC Manufacturer)
3. Visit Windows Update and get all updates (may take repeated visits)
4. Visit Windows Update and get Service Pack 1 (usually under Important Updates). Read these notes for installing SP1: Steps to follow before you install Windows 7 SP1 and Windows Server 2008 R2 SP1 from the Microsoft Download Center
NOTE: For Vista, read these notes:

Read these notes for installing Vista SP1: Learn how to install Windows Vista Service Pack 1 (SP1)
Read these notes for installing Vista SP2: Learn how to install Windows Vista Service Pack 2 (SP2)

5. Visit Windows Update and get any other available updates. May take repeated visits, but keep it up until you get several "Windows is updated" results.
If you're having difficulties with installing a Service Pack, please use the SURTool from this link: What is the System Update Readiness Tool?
Also, check out this troubleshooting link from Microsoft: Troubleshoot problems installing Service Pack 1 (SP1) for Windows 7 and Windows Server 2008 R2

I have had limited success in installing updates/Service Packs when using a "clean boot". I suspect that I'm just bypassing the problem - and that it can come back to bite me in the butt later on.

Do you have a USB sound device? If so, try uninstalling it to see if the BSOD's stop (just a hunch on my part).

If the above steps don't stop the BSOD's, please zip up and upload any new memory dumps with your next post - and we'll see what we can figure out from there.

The following info is just FYI, I've already addressed the issues that I saw in the above paragraphs

- Further info on BSOD error messages available at: http://www.carrona.org/bsodindx.html
- Info on how to troubleshoot BSOD's (DRAFT): http://www.carrona.org/userbsod.html
- How I do it: http://www.carrona.org/howidoit.html

3RD PARTY DRIVERS PRESENT IN THE DUMP FILES

Code:

Rt64win7.sys    Fri Jun 10 02:33:15 2011 (4DF1BAAB)
amdxata.sys     Tue May 19 13:56:59 2009 (4A12F2EB)
cpuz135_x64.sys Wed Jan 19 11:42:06 2011 (4D37145E)
nvlddmkm.sys    Thu Feb 09 21:02:58 2012 (4F347AD2)
speedfan.sys    Fri Mar 18 12:08:46 2011 (4D83838E)

http://www.carrona.org/drivers/driver.php?id=Rt64win7.sys
http://www.carrona.org/drivers/driver.php?id=amdxata.sys
http://www.carrona.org/drivers/driver.php?id=cpuz135_x64.sys
http://www.carrona.org/drivers/driver.php?id=nvlddmkm.sys
http://www.carrona.org/drivers/driver.php?id=speedfan.sys

BSOD BUGCHECK SUMMARY

Code:

Loading Dump File [C:\Users\John\_jcgriff2_\dbug\__Kernel__\071612-24648-01.dmp]
Built by: 7600.17017.amd64fre.win7_gdr.120503-2030
Debug session time: Mon Jul 16 11:10:43.253 2012 (UTC - 4:00)
System Uptime: 4 days 13:54:23.597
BugCheck 109, {a3a039d8a0bde4e9, 0, 3c09be51f0f8d845, 101}
*** WARNING: Unable to verify timestamp for win32k.sys
*** ERROR: Module load completed but symbols could not be loaded for win32k.sys
Probably caused by : Unknown_Image ( ANALYSIS_INCONCLUSIVE )
DEFAULT_BUCKET_ID:  WIN7_DRIVER_FAULT
BUGCHECK_STR:  0x109
PROCESS_NAME:  System
Bugcheck code 00000109
Arguments a3a039d8`a0bde4e9 00000000`00000000 3c09be51`f0f8d845 00000000`00000101
BiosVersion = V1.15
BiosReleaseDate = 03/04/2011
SystemManufacturer = MICRO-STAR INTERNATIONAL CO.,LTD
SystemProductName = MS-7599
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨``