Computer Crash

With 8GB RAM, four 2GB cards you will need a NB voltage bump.
It usually takes more voltage to run that amount of RAM and four cards.

Change the MCH Core from the current 1.200v to 1.300v.
If it crashes again bump it up to 1.350v.

Your DRAM is currently set to 2.000v, bump this to 2.100v.

If you still have crashes after bumping the MCH Core to 1.350v, then bump it to 1.400v and you may need to raise tRFC in Advanced Timing Control to 80.

Just go at one step at a time and test for stability using memtest86+ or Prime95 torture test.

First open Real Temp to monitor CPU temperatures, don't go over 77°C.
Open Prime95 and stop the test if it is running, in Advanced tab select 'Round off checking', in the Options tab select 'Torture Test...', in the window that opens select 'Blend', after 'Number of torture test threads to run' enter 2, then click OK to start the test.


Intel Core 2 Duo E8400
This shows max Tcase is 72.4°C add 5°C for CPU core max temp 77.4°C.

Thanks for the update, let us know the results.

Are you getting a BSoD?

To ensure minidumps are enabled:

Go to Start, in the Search Box type: sysdm.cpl, press Enter.
Under the Advanced tab, click on the Startup and Recovery Settings... button.
Ensure that Automatically restart is unchecked.
Under the Write Debugging Information header select Small memory dump (256 kB) in the dropdown box (the 256kb varies).
Ensure that the Small Dump Directory is listed as %systemroot%\Minidump.
Click OK until you're out.
Reboot if changes have been made.

Blue Screen of Death (BSOD) Posting Instructions
Even if your not getting BSoDs, post the above information, this will help to find a cause.

Try and borrow a GPU and PSU to test with.

Thanks for the update, hope the new RAM solves the crashes.

Let us know if you get another crash.

No new mini dumps.

1 from Nov 21, 2010
2 from Jan 23, 2011
1 from Jan 25, 2011
6 from Jan 29, 2011

Did you ensure minidumps are enabled, steps are listed above.

Code:

 
Event[21]:
  Log Name: System
  Source: Service Control Manager
  Date: 2011-05-24T16:26:05.466
  Event ID: 7022
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: AperatureSci
  Description: 
The Windows Update service hung on starting.
 
Event[23]:
  Log Name: System
  Source: Service Control Manager
  Date: 2011-05-24T16:25:52.475
  Event ID: 7034
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: AperatureSci
  Description: 
The COMODO System - Cleaner Service service terminated unexpectedly.  It has done this 1 time(s).
 
Event[58]:
  Log Name: System
  Source: Service Control Manager
  Date: 2011-05-24T16:19:57.458
  Event ID: 7026
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: AperatureSci
  Description: 
The following boot-start or system-start driver(s) failed to load: 
SASDIFSV  -- These are from Super Anti Spyware
SASKUTIL
 
Event[118]:
  Log Name: System
  Source: Application Popup
  Date: 2011-05-24T16:19:32.680
  Event ID: 1060
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: AperatureSci
  Description: 
\SystemRoot\SysWow64\Drivers\GEARAspiWDM.sys has been blocked from loading due to incompatibility with this system. Please contact your software vendor for a compatible version of the driver.
 
Event[123]:
  Log Name: System
  Source: Application Popup
  Date: 2011-05-24T16:19:26.892
  Event ID: 1060
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: AperatureSci
  Description: 
\??\C:\Users\David\AppData\Local\Temp\HBCD\SuperAntiSpyware\SAS has been blocked from loading due to incompatibility with this system. Please contact your software vendor for a compatible version of the driver.

Un-install Comodo Internet Security and Comodo System-Cleaner, both are causing errors and are not compatible with Win7.
Replace your virus protection with Microsoft Security Essentials and use the Window's Firewall for your firewall protection, for testing purposes.

Un-install Super AntiSpyware, it is incompatible.
Download and run Malwarebytes, be sure to update it before running.

GEARAspiWDM.sys, possibly from itunes, is incompatible. Un-install or find a newer version.

If your running Comodo System-Cleaner, it will delete your dump files.
Running a registry cleaner can delete vital files and stop important system services, when this happens it usually requires a OS clean install.
Un-install or do not run this again until your crash cause is found.

Remove any CD virtualization programs such as Daemon Tools and Alcohol 120%.
They use a driver, sptd.sys, that is notorious for causing BSODs.
Use this SPTD uninstaller when you're done to be sure it is removed: DuplexSecure - Downloads

You can use MagicDisc as an alternative.
Freeware MagicISO Virtual CD/DVD-ROM(MagicDisc) Overview


Have you installed all the MS updates?

Install SP1: Learn how to install Windows 7 Service Pack 1 (SP1)

Run a system file check - SFC /SCANNOW Command - System File Checker